This one is best viewed on end like this. León is the second largest city in Nicaragua, with an urban population just under 200 000. It lies on the west coast of the country and is considered the political and intellectual centre of the country.
The cachet below the stamp sheet is that of the Entomology Museum in León. Entomology = study of insects. This letter was sent to me by the
founder and curator of that museum, Mr. Jean-Michel Maes.