Watch List notes:

George IV, copper pattern halfcrown, 1824, bare head left, rev. crowned helmet over shield of arms, plain edge (ESC.2388, old ESC.641), certified and graded by NGC as Proof-63 Brown, R4 very rare and seldom seen in this metal, well preserved for this soft alloy
The only one graded as Proof-63 Brown by NGC, one higher.

Estimate: 1750 - 2250 GBP