1966 Washington Quarter dollar coin
Coin/Bullion · United States Mint (US Mint), specifically the Philadelphia Mint. The United States government acts as the manufacturer, having produced currency since 1792 with a reputation for high-volume precision striking.
Pattern: Washington Quarter (John Flanagan Obverse Design), introduced in 1932 to commemorate the 200th anniversary of George Washington's birth. Still in circulation and highly common.
Type
Coin/Bullion
Maker
United States Mint (US Mint), specifically the Philadelphia Mint. The United States government acts as the manufacturer, having produced currency since 1792 with a reputation for high-volume precision striking.
Material
Copper-nickel clad copper. It consists of an inner core of 100% copper with an outer layer of 75% copper and 25% nickel (Cupronickel). No actual silver content; 1964 was the final year for circulating 90% silver quarters.
Dimensions
Diameter: 24.26 mm (0.955 in); Thickness: 1.75 mm; Weight: 5.67 grams (std. for clad quarters).
Description
A standard circulating 1966 United States Quarter. While often mistaken by novice collectors for silver due to its metallic luster and proximity to the 1964 silver cutoff, this is a copper-nickel clad specimen. It features the classic John Flanagan bust of George Washington, representing the industrial efficiency of the US Mint during the mid-1960s.
Key Features
Clad composition visible on the edge (copper stripe), 1966 date, lack of a mint mark, and reeded edge.
Material & Composition
Copper-nickel clad copper. It consists of an inner core of 100% copper with an outer layer of 75% copper and 25% nickel (Cupronickel). No actual silver content; 1964 was the final year for circulating 90% silver quarters.
Finish & Decoration
Business strike finish with frosted relief and satin fields. Features a left-facing profile of George Washington on the obverse. Includes the inscriptions LIBERTY, IN GOD WE TRUST, and the date 1966. No mint mark (typical for 1966 Philadelphia strikes).
Hallmarks & Stamps
No silver hallmarks as it is not a silver item. Features the designer's initials 'JF' at the base of Washington's neck. Lack of a mint mark indicates production in Philadelphia.
Construction Details
Machine-struck on a clad planchet using automated high-speed coin presses. The design is impressed onto the blank coin under thousands of pounds of pressure.
Functional Features
Reeded edge (milled edges) designed to prevent debasement or clipping and to assist the visually impaired in identifying denominations. Legal tender for 25 cents.
Handle & Grip Details
Not applicable; however, the reeded edge serves as a tactile grip for handling and vending machine recognition.
Craftsmanship Details
Precision-engineered die-striking. High-quality industrial output but lacks the hand-finishing or artistic uniqueness of numismatic silver medals or early hand-wrought silver items.
Authentication Indicators
Weight (5.67g), diameter, and the characteristic lack of a mint mark are consistent with 1966 Philadelphia production. The 'sandwich' edge showing a red copper center is the primary indicator of its non-silver status.
Origin & Manufacturing
United States of America, Philadelphia Mint. Uses continuous casting and rolling mills to create the clad strips from which blanks are punched.
Era & Period
Modern Era (Clad Coinage Period). Reflects the shift in US monetary policy resulting from the Coinage Act of 1965, which removed silver from quarters to manage silver shortages.
Age Estimate
Dated 1966, confirming it was struck between 1966 and early 1967 (during the transitional production period).
Cultural Significance
Represents the permanent transition of American currency from precious metal 'intrinsic' value to 'fiat' or representative value based on government backing.
Condition Notes
Circulated condition. Shows moderate surface wear on the high points of Washington's hair and cheek. Minor 'bag marks' and contact scratches are visible in the fields. Likely graded 'Very Fine' to 'Extremely Fine' in numismatic terms.
Value Estimate
Face value ($0.25) in circulated condition. High-grade uncirculated (MS67+) specimens can occasionally fetch premium prices at auction, but billions were minted, making circulated pieces very common.
Care & Maintenance
Do not clean or polish if intending to keep for numismatic value, as cleaning leaves microscopic scratches. Store in a dry environment in a PVC-free flip if preservation is desired.
Similar Pieces
1964 Washington Quarter (90% Silver - heavier at 6.25g, solid white edge); 1965 Washington Quarter (First clad year); 1976 Bicentennial Quarter (Dual dated 1776-1976).
Interesting Facts
Due to a silver shortage in the mid-60s, the US Mint removed mint marks from all coins between 1965 and 1967 to discourage coin collecting and keep currency in circulation. This is why 1966 quarters never have a 'D' or 'S' mark.