1866 S Seated Liberty Quarter — Coin Value
Seated Liberty QuarterWhat the 1866 S Seated Liberty Quarter is worth — ungraded vs graded (MS62 / MS66).
1866 S Seated Liberty Quarter value — Ungraded $853. Prices updated August 2026.
Monthly CIB value, based on sold comps.
See the actual sold listings on eBay ↗Live on eBay right now
Expired listings — price reference
1866 S Silver Seated Liberty Quarter- San Francisco, Fine Details
1866-S Liberty Seated Silver Quarter EF Uncertified #1045
1866 S Seated Liberty Silver Quarter PCGS Genuine Tooled F Detail
1866-S MOTTO SEATED LIBERTY 25C QUARTER SAN FRANCISCO MINT NGC-AU DE SCUFF REV 3
1866-S Seated Liberty Quarter., Fine Circulated Coin., Store #QR538.eBay removes ended listings after ~90 days — we keep the prices. Look up finds current listings for the same item.
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Price data verified against · 1
Item details
- Series
- Seated Liberty Quarter
- Year
- 1866
- Mint
- S
1866 S Seated Liberty Quarter value
A raw (ungraded) 1866 S Seated Liberty Quarter runs around $853, a certified MS62 about null, and a high-grade MS66 commands null.
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 | $853 | eBay sold comps |
| Live asking — low / typical / high | $1,150 / $1,829 / $4,495 | 6 live eBay listings ↗ |
Market check: As of July 24, 2026, 6 live eBay listings ask $1,150.00–$4,495.00 (median $1,828.50).
Frequently asked questions
- What is the current estimated value of this 1866 S Seated Liberty Quarter?
- This Ungraded 1866 S Seated Liberty Quarter is valued at $852.
- Is the 1866 S Seated Liberty Quarter considered a rare coin?
- Yes, this specific Seated Liberty Quarter from the year 1866 is a sought-after item.
- What does the 'S' in the coin designation mean?
- The 'S' indicates that this coin was minted at the specified mint.