Explore the 1987 Topps Karl Best #439 Seattle Mariners baseball card. This vintage sports card features the player in Mariners uniform, offering a piece of 1980s MLB history for serious collectors.
Asking Prices: $1.25. Evidence date: Sep 18, 2026.Lowest observed item price: $0.99; shipping and tax excluded.Lowest observed item plus quoted shipping: $0.99, among 19 offers with known shipping; tax excluded.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $0.99 to $0.99 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
Supported by the available observations, but not a guaranteed sale price.
$8.09
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $8.09, based on Guide Estimate.
Source date not available
Guide Estimate: $8.09. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $8.09 to $8.09 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$9.00
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $9.00, based on Guide Estimate.
Source date not available
Guide Estimate: $9.00. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $9.00 to $9.00 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$53.00
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $53.00, based on Guide Estimate.
Source date not available
Guide Estimate: $53.00. Evidence date not available.
This estimate is older and may not reflect today's market.
Over the last 30 days, stored prices ranged from $53.00 to $53.00 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$25.00
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $25.00, based on Guide Estimate.
Source date not available
Guide Estimate: $25.00. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $25.00 to $25.00 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$41.01
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $41.01, based on Guide Estimate.
Source date not available
Guide Estimate: $41.01. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $41.01 to $41.01 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$25.00
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $25.00, based on Guide Estimate.
Source date not available
Guide Estimate: $25.00. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $25.00 to $25.00 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$0.99
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price Guide
Estimate: $0.99, based on Guide Estimate.
Source date not available
Guide Estimate: $0.99. Evidence date not available.
Asking Prices: $1.25. Evidence date: Sep 18, 2026.Lowest observed item price: $0.99; shipping and tax excluded.Lowest observed item plus quoted shipping: $0.99, among 19 offers with known shipping; tax excluded.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $0.99 to $0.99 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
Supported by the available observations, but not a guaranteed sale price.
$8.09
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $8.09, based on Guide Estimate.
Source date not available
Guide Estimate: $8.09. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $8.09 to $8.09 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$9.00
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $9.00, based on Guide Estimate.
Source date not available
Guide Estimate: $9.00. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $9.00 to $9.00 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$53.00
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $53.00, based on Guide Estimate.
Source date not available
Guide Estimate: $53.00. Evidence date not available.
This estimate is older and may not reflect today's market.
Over the last 30 days, stored prices ranged from $53.00 to $53.00 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$25.00
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $25.00, based on Guide Estimate.
Source date not available
Guide Estimate: $25.00. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $25.00 to $25.00 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$41.01
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $41.01, based on Guide Estimate.
Source date not available
Guide Estimate: $41.01. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $41.01 to $41.01 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$25.00
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $25.00, based on Guide Estimate.
Source date not available
Guide Estimate: $25.00. Evidence date not available.
Supported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $25.00 to $25.00 across 2 capture days. Change between Sep 2, 2026 and Sep 18, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
Below grade 10 the guide publishes one estimate across all graders, so these rows are not PSA, BGS, CGC or SGC prices, and a low slabbed grade can sit below a clean raw copy. Grade 10 is estimated per grader.
Each point is the last stored observation that day for this printing, condition, grader, autograph status and source. Gaps mean no observation; guide estimates and asking prices are not completed sales.
Product Overview
Description
The 1987 Topps Karl Best #439 baseball card represents a distinct entry in the iconic Topps series that defined the era of sports card collecting. As a member of the Seattle Mariners roster during the late 1980s, Karl Best appears in this card number, providing a tangible connection to the team's developmental years. For collectors, the 1987 Topps Karl Best #439 serves as a valuable component for those completing full set runs or focusing on Mariners history. The card's identity is rooted in its catalog number and team affiliation, making it a straightforward yet essential piece for enthusiasts tracking player rosters from that specific season. The 1987 Topps brand remains a cornerstone for vintage baseball card investors and hobbyists who appreciate the clarity and accessibility of standard issues from this period. Whether you are building a collection focused on the Seattle Mariners or exploring the wider landscape of 1980s baseball memorabilia, this card offers a clear snapshot of the sport's past. The intersection of the Topps brand, the 1987 release year, and the Mariners team identity creates a unique catalog entry that resonates with long-time fans and new collectors alike.
Last Listing Activity
9/18/26
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Product Specs
Card Details
The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
Estimated delivery October 3, 2026 - October 5, 2026
Collector Ownership
Owned by Collectors
See how many public collections currently include this card.
0 collectors have this card
SuperCatch Expert Analysis
Market Value Insight
This 1987 Topps Karl Best card sits at the entry-level tier of the vintage baseball market, reflecting its status as a common base card from a widely produced set. While it lacks the scarcity drivers that command significant premiums, it remains an accessible asset for collectors building foundational Mariners or 1980s portfolios. Its current positioning indicates it trades in line with mass-produced hobby staples rather than specialized niche items.
Rarity Breakdown
The card carries no special rarity attributes such as serial numbering, short-print designation, or parallel variations, placing it firmly within the standard base set distribution. As a common issue from the 1987 Topps product, its supply is effectively unlimited relative to collector demand, with no mechanical constraints on availability. This lack of unique scarcity markers means its value is driven entirely by condition and completeness of a set rather than individual card exclusivity.
Investment Outlook
As a non-rookie, non-premium parallel from a high-volume base set, this card offers limited appreciation potential compared to key rookie issues or scarce parallels of the same player. Collector demand is likely driven by completists seeking to fill gaps in 1987 Topps sets rather than speculative investors targeting Karl Best specifically. Long-term value retention is probable but modest, aligning with the broader performance of common vintage baseball cards rather than outperforming the market segment.
