1964 Quarter Pattern - RB-1200, INCO

Coin Details

Description

The RB-1200 designation marks the beginning of a new major alloy family within INCO's 1964 experimental quarter program, distinct from the preceding 1000 and 1100 series. This shift in catalog numbering indicates a fundamentally different alloy system or manufacturing approach being evaluated — a different core composition, different cladding thickness, or a novel bonding technique. The International Nickel Company's testing program was structured to explore multiple alloy families in parallel, allowing comparative evaluation of fundamentally different approaches to the silver replacement challenge. This piece was struck on Washington quarter dies at Medallic Art Company to ensure consistency with other test series.

Rarity Notes

Extremely rare experimental piece representing the start of a new alloy family in the INCO testing program. Surviving examples number in single digits.

Cross References

Reed-Brenner RB-1200; NGC census