Honduras – Maya site of Copán

This set has one SS and 3 stamps issued in 1978 but I have only two SS. You can see one SS in this post and another SS is the overprint issue.

Discovered in 1570 by Diego García de Palacio, the ruins of Copán, one of the most important sites of Mayan civilization, were not excavated until the 19th century. Its citadel and imposing public squares characterize its three main stages of development, before the city was abandoned in the early 10th century.