1964 Quarter Pattern - RB-1320, INCO

Coin Details

Description

An experimental quarter featuring the RB-1320 alloy from INCO's 1300-series, struck as part of the 1964 silver replacement evaluation program. This piece represents one of the later entries in the 1300-series sub-family, suggesting it may incorporate refinements based on performance data gathered from earlier compositions in the series. The International Nickel Company's systematic approach to alloy development — test, evaluate, refine, repeat — mirrors modern materials science methodology and produced the robust empirical foundation needed to support one of the most significant policy decisions in American coinage history.

Rarity Notes

Extremely rare experimental piece. Like all INCO 1300-series quarters, this composition is known from very few surviving examples.

Cross References

Reed-Brenner RB-1320; NGC census