Guide Estimate: $1.44. Evidence date not available.
Asking Prices: $0.99. Evidence date: Sep 19, 2026.Lowest observed item price: $0.99; shipping and tax excluded.Lowest observed item plus quoted shipping: $1.19, among 19 offers with known shipping; tax excluded.
Asking 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 $0.99 to $1.00 across 2 capture days. Change between Sep 2, 2026 and Sep 19, 2026: -1%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$1.00As of 4/20/2026
Completed Sales
Based on eBay Sold Listings (RAW) · 3 observations
Estimate: $1.00, based on Completed Sales.
Source date not availableThe available evidence is limited. Review the source and date before comparing prices.
$0.99
Source
Asking Prices
Trend
-1%
Price Details
Based on eBay Active Listings · 20 observations
Estimate: $0.99, based on Asking Prices.
Guide Estimate: $1.44. Evidence date not available.
Asking Prices: $0.99. Evidence date: Sep 19, 2026.Lowest observed item price: $0.99; shipping and tax excluded.Lowest observed item plus quoted shipping: $1.19, among 19 offers with known shipping; tax excluded.
Asking 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 $0.99 to $1.00 across 2 capture days. Change between Sep 2, 2026 and Sep 19, 2026: -1%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.
$1.00As of 4/20/2026
Source
Completed Sales
Trend
Price Details
Based on eBay Sold Listings (RAW) · 3 observations
Estimate: $1.00, based on Completed Sales.
Source date not availableThe available evidence is limited. Review the source and date before comparing prices.
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 Bowman Mark Portugal #318 baseball card captures a specific moment in Houston Astros history during the late 1980s. As a numbered entry in the 1989 Bowman release, this card features Mark Portugal, who served as a pitcher for the team during that era. The Bowman brand has long been a staple for collectors seeking vintage baseball memorabilia, and this card number offers a tangible connection to the roster composition of that specific season. For collectors building a set of 1989 Bowman, card #318 is a necessary component to complete the base set. The catalog identity ties directly to the MLB category, ensuring it appeals to fans of the sport's rich heritage. While Mark Portugal was not a rookie in 1989, his presence on this card provides insight into the depth of the Astros' pitching staff during a transitional period for the franchise. Whether you are focused on completing a base set, investing in Houston Astros history, or simply appreciating the design aesthetics of 1980s card production, this product holds significance for enthusiasts. The straightforward presentation of the player and team allows collectors to focus on the historical context rather than flashy parallels or autographs. It remains a relevant piece for those tracking the careers of pitchers from that decade or seeking to round out their collection of classic baseball cards.
Last Listing Activity
9/17/26
Seller Action
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Product Specs
Card Details
The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
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0 collectors have this card
SuperCatch Expert Analysis
Market Value Insight
The 1989 Bowman Mark Portugal sits at the lower end of the price spectrum, consistent with late-1980s Bowman base cards of journeyman pitchers from that era. Portugal's career with the Astros was solid but not iconic, which limits demand beyond set collectors and vintage Bowman enthusiasts. With only a single active listing, the market is essentially illiquid, making it difficult to establish a reliable price floor or ceiling.
Rarity Breakdown
This is a standard base card from the 1989 Bowman set, which had a wide print run typical of the late junk wax era — meaning raw copies are abundant and graded population reports show little scarcity value. There are no known short prints, parallels, or serial-numbered variants associated with this card. Graded submissions are rare not due to scarcity but due to low collector incentive, as PSA and BGS populations for this card remain minimal.
Investment Outlook
Portugal had a respectable MLB career but never reached Hall of Fame consideration, which significantly limits long-term appreciation potential for his base cards. The 1989 Bowman set does carry some nostalgic appeal among vintage collectors, but Portugal's cards are unlikely to see sustained market momentum without a cultural catalyst. This card is best suited for set completionists rather than investors seeking meaningful upside.
