(1964-65) Blank Pattern - RB-6030, INCO

Coin Details

Description

Experimental blank planchet RB-6030, continuing the regular ten-unit progression through the RB-60xx subseries. This composition variant is the fourth entry in the early RB-6xxx sequence, documenting yet another alloy formulation in INCO's comprehensive evaluation matrix. The methodical spacing and consistent numbering of these blanks reflects the industrial scale of the silver replacement project — this was not a small-batch laboratory experiment but a major industrial research program involving hundreds of individual compositions, thousands of test pieces, and millions of dollars in research expenditure. The International Nickel Company invested heavily in the silver replacement program not only because of the immediate commercial opportunity — supplying nickel for billions of new coins — but also because a successful demonstration of their alloy technology on the world's largest coinage system would establish INCO as the premier supplier of coinage metals globally. Every blank in the series, including RB-6030, served this dual purpose: advancing the technical evaluation for the Treasury while building INCO's portfolio of proven coinage alloy solutions.

Rarity Notes

R-7 to R-8. Extremely rare, with very few specimens known outside institutional collections.

Cross References

RB-6030 (Robinson-Breen catalog). INCO experimental blank planchet series, RB-6xxx group, 1964-65.