1991 S [USO ANNIVERSARY PROOF] Modern Commemorative — Coin Value
Modern CommemorativeWhat the 1991 S [USO ANNIVERSARY PROOF] Modern Commemorative is worth — ungraded vs graded (MS62 / MS66).
1991 S [USO ANNIVERSARY PROOF] Modern Commemorative value — Ungraded $61 · MS66 $439. Prices updated August 2026.
Live on eBay right now
Which version do you have?
For the cheapest way to own the 1991 S Modern Commemorative, buy the Mount Rushmore Half Dollar Proof at $15. The USO Anniversary Proof ($64) and Mount Rushmore Proof ($50) offer premium packaging and specific commemorative editions, which collectors value. If you prioritize owning the item affordably, stick to the Half Dollar. If you seek collectible prestige and presentation, the higher-priced proofs are the choice.
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Price data verified against · 1
Item details
- Series
- Modern Commemorative
- Year
- 1991
- Mint
- S
1991 S [USO ANNIVERSARY PROOF] Modern Commemorative value
A raw (ungraded) 1991 S [USO ANNIVERSARY PROOF] Modern Commemorative runs around $61, a certified MS62 about null, and a high-grade MS66 commands $439.
What drives the price
Grade, mint mark, strike quality, and key dates drive coin value. Certified (slabbed) coins carry a premium over raw; low-mintage years and full-strike examples appreciate the most.
Price guide
What this actually trades for — sold values by condition vs. what sellers are asking today
| Condition | Value | Based on |
|---|---|---|
| Ungraded | $61 | eBay sold comps |
| MS66 | $439 | eBay sold comps |
Frequently asked questions
- What is the current estimated value of an ungraded 1991 S Modern Commemorative?
- An ungraded 1991 S Modern Commemorative is currently valued around $64.
- How much more valuable is the MS66 version compared to the ungraded version?
- The MS66 version is valued at $439, significantly higher than the $64 price point for ungraded copies.
- What is the series and year of this commemorative coin?
- This coin belongs to the Modern Commemorative series and was issued in the year 1991.