Let’s head back to 1875. By this time -and after several printings- the plate of the medio real cracked to the point that it wasn’t able to be used anymore. So, another plate was made to continue printing, but there were some differences in the plate -really easy to see- from the previous one…Scott 1a was born! For Unknown reasons -and thank God- the quality inspection process wasn’t that good and we’re fortunate to have one of the top 3 rarest stamps in Costa Rica’s philatelic history.
Yes, Scott 1b which consists in a vertical pair imperforated horizontaly. Only 36 of these have been reported to exist. And guess what? here you have it!