1964 Quarter Pattern - RB-1100, INCO

Coin Details

Description

The RB-1100 designation marks the beginning of a new sub-series within INCO's experimental quarter program, suggesting a shift to a different alloy family or manufacturing approach compared to the RB-1000 through RB-1035 pieces. The International Nickel Company's testing methodology was highly systematic, with major series numbers (1000, 1100, 1200, etc.) typically indicating fundamentally different alloy systems, while minor increments within each series represented controlled variations of the base composition. This piece was struck on a Washington quarter die pair at Medallic Art Company, allowing direct comparison of striking quality, luster, and design detail reproduction across different alloy families.

Rarity Notes

Extremely rare experimental piece. The RB-1100 sub-series compositions are known in very small numbers, typical of the entire INCO experimental program.

Cross References

Reed-Brenner RB-1100; NGC census