1988 S [PROOF] Washington Quarter — Coin Value
Washington QuarterWhat the 1988 S [PROOF] Washington Quarter is worth — ungraded vs graded (MS62 / MS66).
1988 S [PROOF] Washington Quarter value — Ungraded $2 · MS66 $13. Prices updated September 2026.
Series · Washington QuarterMint · SYear · 1988
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Item details
- Series
- Washington Quarter
- Year
- 1988
- Mint
- S
1988 S [PROOF] Washington Quarter value
A raw (ungraded) 1988 S [PROOF] Washington Quarter runs around $2, a certified MS62 about null, and a high-grade MS66 commands $13.
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 | $2 | eBay sold comps |
| MS66 | $13 | eBay sold comps |
Frequently asked questions
- What is the value of an ungraded 1988 S Washington Quarter?
- The value for an ungraded 1988 S Washington Quarter is available on the marketplace, depending on its specific condition.
- Is the MS66 grade common for this coin?
- The MS66 grade is available for the 1988 S Washington Quarter, with that specific condition valued at $16.
- What series does this 1988 S Washington Quarter belong to?
- This coin is part of the Washington Quarter series and was minted in 1988 by the S mint.