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About This Card
Explore the 1991 Upper Deck Mark Leonard #557 baseball card, a notable entry from the inaugural Upper Deck release featuring the San Francisco Giants.
Mark Leonard
1991 • Upper Deck • Low Number
Major League Baseball • San Francisco Giants
Seller Offer
1 available$1.00
Raw/Ungraded Market: $1.11
Stale · as of 10/16/2026Condition
Near Mint
Card Number
557
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Primary Seller
New
Shipping Calculated at Checkout
Arrives in 5-7 daysEstimated delivery November 19, 2026 - November 21, 2026
30-day ReturnsMarket & Price History
| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$1.11As of 10/16/2026 | Guide Estimate | |||
- $1.11As of 10/16/2026
- Source
- Guide Estimate
- Trend
- Price Details
30-day Price History
Raw / Ungraded
PriceCharting Price Guide · Guide Estimate evidence · captured Oct 17, 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.Product Overview
Description
The 1991 Upper Deck Mark Leonard #557 baseball card holds a specific place in hobby history as part of the brand's very first set. Released during a pivotal era for sports card manufacturing, this product represents the debut of Upper Deck into the market, introducing a new standard in card stock and design aesthetics that would influence the industry for decades. Collectors often seek out cards from this year to capture the transition period in trading card production. Mark Leonard, featured on card number 557, is associated with the San Francisco Giants within the context of this release. For fans of the team or those focusing on specific player subsets, this card serves as a tangible connection to the 1991 season. The #557 designation places it within the base set, offering a straightforward yet meaningful addition to any collection focused on this athlete or team affiliation. The 1991 Upper Deck Mark Leonard #557 card appeals to enthusiasts who value the provenance of the manufacturer as much as the subject. As part of the growing archive of vintage baseball memorabilia, items from this release are recognized for their role in the modern hobby's evolution. Whether you are completing a set of Giants players or building a collection centered on the 1991 Upper Deck brand, this card provides a direct link to that time. Its status as a numbered piece from the brand's inaugural year makes it a point of interest for serious hobbyists tracking the lineage of major manufacturers. The card remains a relevant item for those interested in the historical context of baseball collectibles and the specific contributions of players like Mark Leonard during his career. Collectors often discuss the significance of early Upper Deck releases when evaluating the depth of a vintage collection. This card, identified by its 1991 year and #557 number, stands as a representative example of the brand's early output. It offers a clear path for enthusiasts to engage with the history of the sport through its documented players and teams.
Last Listing Activity
11/1/26
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Product Specs
Card Details
The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
Catalog Profile
The core identity of the card within the set.
Featured Subject
The subject, team, league, and sport context tied to this card.
Print Details
Production details and format-specific attributes.
Material
Card Stock
Language
English
Available Offers
Available Offer for This Card (1)
Compare prices, grades, photos, and shipping from approved sellers.
Featured Offer
New
Condition
Near Mint
Seller PriceShipping Extra
$1.00
Arrives in 5-7 days
Estimated delivery November 19, 2026 - November 21, 2026Collector Ownership
Owned by Collectors
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0 collectors have this card
SuperCatch Expert Analysis
Market Value Insight
This 1991 Upper Deck Mark Leonard card sits in the entry-level tier for Giants memorabilia, reflecting the player's role as a journeyman rather than a franchise cornerstone. The absence of special attributes or serial numbering keeps the valuation grounded in raw market supply, resulting in a modest premium over ungraded base equivalents. While it lacks the high-demand drivers of superstar issues, it remains a tangible piece of early-90s baseball history for specialized collectors.
Rarity Breakdown
The card is identified as a base issue within the 'Low Number' series designation, meaning it does not carry the scarcity mechanics of parallel versions, short prints, or unique serializations. Supply is determined by standard production runs rather than limited editions, making it accessible to a broad segment of the hobby. Without specific rarity markers like one-of-one status or low-number serials, the item relies on general availability rather than constrained supply for its value proposition.
Investment Outlook
As a non-rookie, non-premium parallel from a 1991 release, the card offers minimal appreciation potential compared to higher-tier rookie or autograph issues. Collector demand is likely driven by niche Giants team sets or specific year-based collections rather than individual player prominence. Investors should view this as a low-cost acquisition for diversification within a larger portfolio rather than a standalone growth asset.
AI-Generated Editorial Analysis
FAQ
Frequently Asked Questions
What set does the 1991 Upper Deck Mark Leonard #557 card belong to?
This card is part of the 1991 Upper Deck baseball set, which was the inaugural release for the Upper Deck brand. It is a base card numbered 557 in that specific collection.
Who is Mark Leonard in the context of this card?
Mark Leonard is the player featured on this card. He is associated with the San Francisco Giants, making this card relevant to collectors of Giants memorabilia or those focusing on his career.
Why is the 1991 Upper Deck set significant to collectors?
The 1991 Upper Deck set is significant because it was the first trading card set produced by the Upper Deck company. It is widely recognized by hobbyists as a key release in the history of sports card manufacturing.
