Watch List notes:

Halfcrown 1953 Proof. Obverse 1 Reverse A. Obverse 1 :- I of DEI points to a space weakly struck portrait, a Proof version of the early portrait (used in the plastic set) of Davies 2310 (the standard proof is Davies 2311) this piece unlisted by Davies and extremely rare FDC, CGS 88

Estimate: 750-850 GBP