1964 Quarter Pattern - RB-1150, INCO
Strike TypeCoin Details
Description
The RB-1150 experimental quarter belongs to INCO's 1100-series alloy testing program, part of the landmark 1964 evaluation that transformed American coinage. This piece was struck at Medallic Art Company using Washington quarter dies, combining the familiar design of the circulating quarter with an experimental planchet composition. The International Nickel Company's role in developing the copper-nickel clad composition that replaced silver gave these experimental pieces particular historical significance — they represent the prototype stage of a coinage composition that has been used continuously for over sixty years and shows no signs of being replaced.
Rarity Notes
Extremely rare. The RB-1150 alloy composition is known from only a small number of surviving examples.
Cross References
Reed-Brenner RB-1150; NGC census
External References
Error Varieties
No listings found
This category doesn't have any child listings yet.
Other Strike Types in This Series
Collector Essentials
Tools and references for building and protecting your coin collection.
10x-20x Jeweler's Loupe
A must-have for examining coin details, mint marks, and surface quality
Red Book — Guide to U.S. Coins
The essential annual reference for U.S. coin values, history, and mintages
Coin Albums & Storage
Archival-quality albums and holders to protect and display your collection
USB Digital Microscope
Capture detailed images for documentation and community submissions
As an Amazon Associate, NumisDex earns from qualifying purchases.