Explore the 1990 Upper Deck Mark Portugal #502 baseball card, a notable entry from the Houston Astros player's career in the inaugural year of the Upper Deck brand.
1990 • Upper Deck • Low Number
Major League Baseball • Houston Astros
Near Mint
502
New
Shipping Calculated at Checkout
30-day Returns| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$1.10As of 10/13/2026 | Guide Estimate | |||
Raw / Ungraded
PriceCharting Price Guide · Guide Estimate evidence · captured Oct 13, 2026
History is building. At least two days of matching observations are needed to show a trend.
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.The 1990 Upper Deck Mark Portugal #502 represents a significant piece of baseball trading card history, marking the debut of the Upper Deck brand. As the first major manufacturer to introduce high-quality, plastic-sealed packs, Upper Deck set a new standard for the industry, and this card stands as a testament to that pioneering era. Collectors often seek out cards from this release due to its historical importance in the evolution of sports memorabilia. Mark Portugal, who played for the Houston Astros, is featured on card number 502 in this base set. For investors and hobbyists alike, cards from this inaugural set carry a unique charm, reflecting the excitement of a new chapter in the collecting world. This card is part of the broader 1990 Upper Deck collection, which includes players from various teams across Major League Baseball. The set's layout and card stock quality were considered premium for its time, making it a favorite among those who appreciate the tangible history of the sport. Whether you are building a collection focused on the Houston Astros, the 1990 MLB season, or the Upper Deck brand itself, this card offers a direct connection to that pivotal year. By focusing on the integrity and identity of each product, we help maintain the value and interest in these historical pieces. The 1990 Upper Deck Mark Portugal #502 remains a recognizable and respected item for those who value the origins of modern card production.
5 days ago
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Production details and format-specific attributes.
Material
Card Stock
Language
English
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FAQ
The card was released in 1990 as part of the inaugural Upper Deck baseball set, which was the first major trading card product from the Upper Deck company.
Mark Portugal is a former professional baseball pitcher who played in Major League Baseball, notably for the Houston Astros during the late 1980s and early 1990s.
The 1990 Upper Deck set is historically significant because it was the first major release from the Upper Deck brand, introducing high-quality packaging and printing standards that changed the industry.
This 1990 Upper Deck Mark Portugal card trades at a modest value tier, reflecting his status as a role player rather than a franchise cornerstone. The current market positioning suggests a stable, accessible entry point for collectors focusing on Astros history or 1990s baseball nostalgia, without commanding significant premiums associated with elite stars.
The card is identified as part of the 'Low Number' series within the base set, indicating a specific subset of the print run. However, the absence of special attributes such as serial numbering, short prints, or parallels suggests it remains a standard base card in terms of scarcity mechanics. Supply is likely abundant relative to parallel variants, keeping rarity low.
As a non-rookie card from a standard set, the investment outlook is limited by the lack of rookie-year premium mechanics. Collector demand is driven primarily by team affiliation and era specificity rather than statistical achievement or scarcity. Long-term value appreciation is unlikely to outpace broader market trends for common base cards from this era.
