COSTA RICA. Banco Nacional de Costa Rica. 10 Colones, 10.3.1937. P-191. PMG Very Fine 20.Lightly circulated example of this deceptively scarce provisional variety of the Banco Nacional de Costa Rica that was overprinted on old stock of the Banco Nacional. While this example is in well circulated condition, this note is problem free, and is surpassed in the PMG population report by just three finer examples.