Greece
Republic Proof 10 Drachmai 1930 PR64 PCGS, London mint, KM72. Very rare in proof condition, with the present example exhibiting exemplary eye-appeal, the surfaces remaining fully reflective as dappled olive, gold and cyan-blue patina traverses both sides. Seemingly very conservatively graded as well, with no apparent imperfects that would would account for a sub-Gem grade.
Estimate: 5000-6000 USD