1966 [SMS PROOF] Washington Quarter — Coin Value
Washington QuarterWhat the 1966 [SMS PROOF] Washington Quarter is worth — ungraded vs graded (MS62 / MS66).
1966 [SMS PROOF] Washington Quarter value — Ungraded $20 · MS62 $19 · MS66 $73. Prices updated August 2026.
Real sold prices per grade — the MS66 premium on this card is 3.6× raw.
Live on eBay right now
Which version do you have?
If you simply want a 1966 Washington Quarter, the Standard version at $3 is the cheapest way to own it. The SMS PROOF version at $20 offers a superior collectible experience through its specialized proof finish and packaging. Casual collectors should stick to the Standard, while serious numismatists willing to pay the premium for the SMS PROOF gain a higher-quality, more desirable piece.
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Price data verified against · 1
Item details
- Series
- Washington Quarter
- Year
- 1966
1966 [SMS PROOF] Washington Quarter value
A raw (ungraded) 1966 [SMS PROOF] Washington Quarter runs around $20, a certified MS62 about $19, and a high-grade MS66 commands $73.
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 | $20 | eBay sold comps |
| MS62 | $19 | eBay sold comps |
| MS66 | $73 | eBay sold comps |
Frequently asked questions
- What is the estimated value of an ungraded 1966 Washington Quarter?
- An ungraded 1966 Washington Quarter is currently valued around $21.
- How much more is an MS66 compared to an MS62?
- The MS66 condition is valued at $73, significantly higher than the $18 price point for MS62.
- Is the 1966 Washington Quarter a good investment?
- Its value ranges from $21 (Ungraded) to $73 (MS66), showing strong condition-dependent potential.