1978-S Washington Quarter Proof Value
Real sold prices from 23 tracked eBay sales — tracking since July 2026.
Photos from recent tracked eBay sales.
Computed from 23 real eBay sold listings tracked by CoinGrader since Jul 2026 · prices updated Aug 5, 2026. Not price-guide estimates.
Recent sales
Frequently asked questions
How much is a 1978-S Washington Quarter Proof worth?
Based on real eBay sold listings, a raw (ungraded) 1978-S Washington Quarter Proof sells for around $1. These figures come from 23 tracked sales, not a price guide.
Where do these prices come from?
CoinGrader continuously tracks completed eBay sales for this coin. Prices shown are computed from those real transactions (recent sales weighted more heavily, obvious outliers removed) — they are market prices, not catalog or price-guide values.
Should I get my 1978-S Washington Quarter Proof graded?
It depends on the coin's condition. You can upload photos to CoinGrader for an instant AI grade estimate and market value before spending on professional certification.
Have this coin?
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