Baldwin & Sons
Auction 86 6 May 2014
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COINS, CHANNEL ISLANDS, GUERNSEY William IV (1830-1837), Copper Proof Double, 1830, die axis ↑↑ (Pr 72A; S 7202; KM 1a). Obverse with full lustre, minor spots both sides, otherwise brilliant uncirculated.
ex A L T McCammon collection, Baldwin's Auction 20, 11 October 1999, lot 144 (part)
This usually comes as a bronzed proof and with a coin die axis of the circulating coin. An argument can be made to call this a pattern, as they were perhaps testing the dies to see how the die flow affected the overall design strength with the medal die axis.
Estimate: £300-400
ex A L T McCammon collection, Baldwin's Auction 20, 11 October 1999, lot 144 (part)
This usually comes as a bronzed proof and with a coin die axis of the circulating coin. An argument can be made to call this a pattern, as they were perhaps testing the dies to see how the die flow affected the overall design strength with the medal die axis.
Estimate: £300-400