Here is an Airline issue label from Honduras. T.A.C.A. ( Transportes Aereos Centro Americanos ).
TACA was founded in 1931. TACA is the trade name "brand" comprising a group of five independently IATA-coded and -owned Central American airlines, whose operations are combined to function as one and a number of other independently owned and IATA-coded regional airlines which code-share and feed the TACA brand system. TACA, originally an acronym of Transportes Aéreos Centroamericanos (Central American Air Transport), now stands for Transportes Aéreos del Continente Americano (Air Transport of the American Continent), reflecting its expansion to North, Central, South America and the Caribbean. (wikipedia).
Year: 1947, Gummed. Günter Mair's catalogue no: - HND-B-2, rouletted H (wide steps), winged shape,
booklets with V strips of 5 pairs tête-bêche, issued for customers in Honduras, El Salvador, Costa Rica
and Guatemala. 4****