The 2011 Topps Update Series Diamond Anniversary Danny Duffy card (US312) captures the Kansas City Royals prospect in this distinctive insert subset from the 2011 update run.
Danny Duffy
2011 • Topps • Update Series • Diamond Anniversary
Estimated delivery October 7, 2026 - October 9, 2026
30-day Returns
Market & Price History
Prices Captured Sep 12, 2026
Condition
Value
Source
Trend
Price Details
$1.25As of 9/12/2026
Guide Estimate
Based on Aggregated Price Guide
Estimate: $1.25, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
$18.99As of 9/12/2026
Guide Estimate
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $18.99, based on Guide Estimate.
Source date not availableThis estimate is older and may not reflect today's market.
$21.00As of 9/12/2026
Guide Estimate
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $21.00, based on Guide Estimate.
Source date not availableThis estimate is older and may not reflect today's market.
$1.25As of 9/12/2026
Source
Guide Estimate
Trend
Price Details
Based on Aggregated Price Guide
Estimate: $1.25, based on Guide Estimate.
Source date not availableSupported by the available observations, but not a guaranteed sale price.
$18.99As of 9/12/2026
Source
Guide Estimate
Trend
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $18.99, based on Guide Estimate.
Source date not availableThis estimate is older and may not reflect today's market.
$21.00As of 9/12/2026
Source
Guide Estimate
Trend
Price Details
Based on Aggregated Price GuideGuide grade mapping; not verified grader-specific sales
Estimate: $21.00, based on Guide Estimate.
Source date not availableThis estimate is older and may not reflect today's market.
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.
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
Collectors looking for 2011 Topps Update Series inserts will find the Danny Duffy US312 card in the Diamond Anniversary subset to be a notable addition to their baseball collections. Released during a pivotal year for the Kansas City Royals organization, this card highlights a player who was gaining traction within the farm system. The Diamond Anniversary subset features unique designs that distinguish it from the base update set, offering a specialized collecting avenue for those who appreciate themed parallels and inserts. Danny Duffy, identified by card number US312, is featured in this release from the 2011 Topps Update Series. As an update product, this series captures the evolving landscape of Major League Baseball throughout the season, providing collectors with newer images and developments not found in the primary flagship set. The Diamond Anniversary subset adds a layer of visual distinction, often utilizing special foil treatments or border designs that appeal to subset hunters and parallel collectors alike. For fans of the Kansas City Royals and baseball history, this card represents a tangible piece of the 2011 season. It serves as a reference point for collectors tracking the development of players who were active in MLB during that era. Whether building a team set, focusing on the 2011 update runs, or collecting specific insert subsets, the US312 card fits into broader collecting strategies. The card stands as a documented artifact of the sport's 2011 landscape, valued for its place in the Topps update chronology and its connection to the Diamond Anniversary design theme.
Last Listing Activity
9/17/26
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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 7, 2026 - October 9, 2026
Collector Ownership
Owned by Collectors
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0 collectors have this card
SuperCatch Expert Analysis
Market Value Insight
This 2011 Topps Update Series card of Danny Duffy resides in the lower price tier relative to his career-high rookie parallels or key insert sets. As a base update card, it trades at a modest premium over common base issues but lacks the significant condition premiums associated with graded copies of his primary 2011 rookie card. The current market reflects a stable, accessible entry point for collectors focusing on specific team subsets rather than broader investment-grade assets.
Rarity Breakdown
The card carries no special scarcity attributes such as serial numbering, short-print status, or unique parallels, placing it firmly in the standard base category of the Update Series. Supply is determined by the general print run of the 2011 Topps Update set, which was widely distributed to meet collector demand for mid-season roster changes. Consequently, the card exhibits high availability relative to limited-edition inserts or autographed variations from the same product line.
Investment Outlook
As a non-rookie card from a secondary set, this item lacks the rookie-card premium mechanics that typically drive long-term value appreciation for established players. Collector demand is likely driven by specific Kansas City Royals subset completionists rather than broad market speculation. The investment outlook suggests steady, low-volatility holding potential for team-focused collections, with limited upside from broader baseball investment trends.
