(1965) Half Dollar Pattern - RB-4500, INCO
Strike TypeCoin Details
Description
RB-4500 is a 1965 half dollar pattern from the International Nickel Company experimental series. The date is attributed rather than struck. It belongs to the alloy trials of 1964 and 1965, when the Treasury was looking for a replacement for 90% silver coinage before the Coinage Act of 1965. USPatterns.com describes INCO's 1965 pieces as a second version of Gilroy Roberts's design, again portraying Paul D. Merica, with the laboratory named for him on the other side. Pollock records the 1965 half-dollar-size piece in 95% nickel and 5% silicon on a permalloy core, with plain edge (Pollock-5383) or reeded edge (Pollock-5384). The sources read do not say which Burdette number matches which. NGC lists it as (1965) INCO RB-4500 50C; the RB number is Roger W. Burdette's, from Private Pattern and Related Pieces: International Nickel & Gould Incorporated (2019).
Cross References
Burdette RB-4500
External References
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