Source date not availableAsking prices are unsold offers, not completed sales. Repeated observations do not establish additional buyer demand.This estimate is older and may not reflect today's market.
Over the last 30 days, stored prices ranged from $1.39 to $1.40 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: -0.7%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$40.00
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $40.00, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $40.00 to $40.00 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$19.00
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $19.00, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $19.00 to $19.00 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$31.00
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $31.00, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $31.00 to $31.00 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$19.00
Guide Estimate
0%
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $19.00, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $19.00 to $19.00 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$1.39
Source
Asking Prices
Trend
-0.7%
Price Details
Based on eBay Active Listings · 22 observations
Estimate: $1.39, based on Asking Prices.
Source date not availableAsking prices are unsold offers, not completed sales. Repeated observations do not establish additional buyer demand.This estimate is older and may not reflect today's market.
Over the last 30 days, stored prices ranged from $1.39 to $1.40 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: -0.7%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$40.00
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $40.00, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $40.00 to $40.00 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$19.00
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $19.00, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $19.00 to $19.00 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$31.00
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $31.00, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $31.00 to $31.00 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$19.00
Source
Guide Estimate
Trend
0%
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $19.00, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
Over the last 30 days, stored prices ranged from $19.00 to $19.00 across 2 capture days. Change between Sep 1, 2026 and Sep 16, 2026: 0%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
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 1989 Topps Greg Brock #517 card stands as a specific entry in the iconic 1989 Topps baseball set, documenting the Milwaukee Brewers roster during that season. Released by Topps, this card number is part of the base set that defined the visual identity of baseball trading cards in the late 1980s. Collectors often seek out individual cards from this era to complete their sets or to build collections focused on specific teams and players. Greg Brock's appearance on card #517 represents a snapshot of his career with the Brewers. This card is valued for its place within the catalog, offering a direct link to the Milwaukee Brewers' lineup from 1989. Whether you are looking to add to a Milwaukee Brewers collection or explore the broader landscape of 1989 baseball memorabilia, this card serves as a key component for enthusiasts. The product's identity is rooted in its origin from the Topps brand, ensuring authenticity for those who prioritize provenance in their collecting journey. Collecting cards from the 1989 Topps series allows fans to hold a tangible piece of MLB history. Each card, including #517, contributes to the narrative of the sport during that time. By focusing on the catalog details, such as the team affiliation and card number, collectors can navigate the vast array of options available in the vintage market with confidence. This card is a testament to the enduring appeal of baseball trading cards as a medium for preserving sports history.
Last Listing Activity
9/19/26
Seller Action
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Product Specs
Card Details
The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
See how many public collections currently include this card.
0 collectors have this card
SuperCatch Expert Analysis
Market Value Insight
Greg Brock holds a niche position within the 1989 Topps baseball set, trading at a modest price tier that reflects his status as a role player rather than a marquee superstar. The current listing activity suggests a stable, albeit low-volume, market where condition and centering likely dictate the premium over the baseline value. As a player from the late 80s era, his cards generally serve as affordable entry points for collectors focusing on specific team or league completions.
Rarity Breakdown
This card is a standard base issue from the 1989 Topps set, meaning it does not carry the scarcity mechanics associated with parallel variants, short prints, or serial numbering. Supply is effectively unlimited relative to collector demand, as the entire print run was released without special restrictions or limited edition designations. Consequently, the card relies entirely on its presence in the base set for its collectible identity, lacking any exclusive rarity attributes that would artificially constrain availability.
Investment Outlook
As a non-rookie, non-premium parallel card, the investment potential is primarily driven by set completionism rather than individual player appreciation or scarcity. Demand is likely steady among Milwaukee Brewers memorabilia collectors or those completing year-specific base sets, providing a low-risk but low-reward holding profile. The lack of special attributes limits upside potential, making it a functional component for comprehensive collections rather than a standalone speculative asset.
