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2018 (S) Proof Block Island National Wildlife Refuge Quarter

Strike Type

Coin Details

Year

2018

Denomination

Quarter

Mint Mark

Strike Type

Proof

Series

America the Beautiful Quarters 2010-2021

Designer

John Flanagan (obverse) / Chris Costello (reverse, sculpted by Phebe Hemphill)

Mintage

621,466

Composition

75% Copper, 25% Nickel over a pure Copper center

Weight

5.67g

Diameter

24.3mm

Edge

Reeded

Value Estimates

$0.25 - $26

Values as of May 2026, from published price guides and, in some cases, recorded auction sales. For most coins the range runs from a well-worn example (around G-4) to an uncirculated one, but individual coins can sell for more or less depending on grade, eye appeal and demand. Compare recent sales of similar coins for a closer estimate.

Auction Record

Price realized: $32
Sold: 9 July 2018
Grade: PR70DCAM
Auction house: eBay

Description

The 2018 (S) Proof Block Island National Wildlife Refuge Quarter is a proof quarter struck at the San Francisco Mint, part of the America the Beautiful Quarters 2010-2021 series. The San Francisco Mint struck 621,466 clad proof Block Island quarters dated 2018. The obverse features George Washington facing left, based on a 1786 bust by Jean-Antoine Houdon and the reverse displays unique designs featuring national parks and sites from each state and territory. The reverse depicts a black-crowned night-heron in flight over Cow Cove. Block Island protects critical coastal habitat recognized by The Nature Conservancy as one of the "Last Great Places" in the Western Hemisphere. Pictured Rocks (MI), Apostle Islands (WI), Voyageurs (MN), Cumberland Island (GA), and Block Island (RI) were featured. The program continued with strong collector support nearing its conclusion. As a proof issue, this coin was struck multiple times on specially prepared polished planchets using polished dies, producing mirror-like fields and frosted design elements prized by collectors. Struck at the San Francisco Mint, established during the California Gold Rush and now primarily producing proof and collector coins. Estimated market value ranges from $0.25 to $26 depending on grade and condition. Struck in 75% copper, 25% nickel over a pure copper center, weighing 5.67 grams, 24.3 mm in diameter, with a reeded edge. Cataloged as PCGS #659608.