Issue of 1883 overprinted in red, horizontally "Guanacaste".(16 x 2 mm).
Dangerous counterfeits exist.
Typographed by Imprenta Nacional using a plate of 50. Two printings exist: the first one has the overprint on the lower section of the stamp. On the second printing, "Guanacaste" is something more centered and the plate used had a combination of type 1 and 3 overprints.
