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2018 (S) Proof Block Island National Park Quarter

Strike Type
2018 (S) Proof Block Island National Park Quarter

Coin Details

Year
2018
Denomination
Quarter
Mint Mark
S
Strike Type
Proof
Series
America the Beautiful Quarters 2010-2021
Designer
John Flanagan/Chris Costello
Mintage
675,567
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 — estimates reflect typical grades (G-4 through MS-63). Coins in lower or exceptional grades may fall outside this range.

Auction Record

$32 PR70DCAM 07-09-2018 eBay

Description

The 2018 (S) Proof Block Island National Park Quarter is a proof quarter struck at the San Francisco Mint, part of the America the Beautiful Quarters 2010-2021 series. The U.S. Mint produced 675,567 examples, making this ranked 9th of 25 mint variants by mintage, with less than 1% of production. 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 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.

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