1964 Quarter Pattern - RB-1400, INCO

Coin Details

Description

The RB-1400 designation introduces yet another major alloy family in INCO's comprehensive 1964 experimental quarter program, representing a fourth distinct metallurgical approach to the silver replacement challenge. Each jump in the hundreds digit of the Reed-Brenner catalog number signifies a qualitatively different alloy concept, whether in base composition, cladding structure, or manufacturing process. The 1400-series explored alloys optimized for specific performance criteria that earlier series did not fully satisfy — improved wear resistance, better toning characteristics, or enhanced vending machine compatibility. This piece was struck on Washington quarter dies at Medallic Art Company under the standard INCO testing protocol.

Rarity Notes

Extremely rare experimental piece from the 1400-series alloy family. Only a handful of examples survive for each individual RB composition.

Cross References

Reed-Brenner RB-1400; NGC census