1999 S [SILVER PENNSYLVANIA PROOF] State Quarter — Coin Value
State QuarterWhat the 1999 S [SILVER PENNSYLVANIA PROOF] State Quarter is worth — ungraded vs graded (MS62 / MS66).
1999 S [SILVER PENNSYLVANIA PROOF] State Quarter value — Ungraded $17 · MS66 $38. Prices updated August 2026.
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Which version do you have?
To simply own a 1999 S State Quarter, purchase the CLAD GEORGIA PROOF for $3. The higher-priced SILVER PROOF versions, like the SILVER DELAWARE PROOF at $19, offer premium collectible status through specific state editions and proof quality. Buyers prioritizing basic ownership should choose the cheapest clad option, while those seeking a display-worthy piece should invest in the more expensive silver proof varieties.
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Price data verified against · 1
Item details
- Series
- State Quarter
- Year
- 1999
- Mint
- S
1999 S [SILVER PENNSYLVANIA PROOF] State Quarter value
A raw (ungraded) 1999 S [SILVER PENNSYLVANIA PROOF] State Quarter runs around $17, a certified MS62 about null, and a high-grade MS66 commands $38.
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 | $17 | eBay sold comps |
| MS66 | $38 | eBay sold comps |
Frequently asked questions
- What is the difference in value between the ungraded and MS66 versions?
- The MS66 graded version is valued higher at $35 compared to the ungraded condition, which sells for approximately $19.
- Is the 1999 State Quarter considered rare?
- It is a specific issue from the 1999 series minted at the S facility.
- Where can I find this 1999 S State Quarter?
- You can find this State Quarter listed on our resale-value marketplace.