Watch List notes:

Halfcrown 1953 Frosted Proof CGS variety 05. Davies dies 2A (as the standard Proof dies) with the obverse and reverse design much more heavily frosted than the standard coin, most noticeable on the reverse in the backgrounds to the shield and crown detail (on the standard proof coin these areas are not frosted) a highly unusual piece, slabbed and graded CGS 92

Estimate: 250-375 GBP