1970 Spanish Sahara Butterfly Stamps Set

This is a horizontal strip of five vintage postage stamps issued for the Spanish Sahara (Sahara Español) in 1970, specifically celebrating the 'Día del Sello' (Stamp Day). The stamps feature detailed Lepidoptera (butterflies and moths) illustrations in a scientific, natural history style. Each stamp is printed on white paper with standard perforations. The denominations visible include 50 Cts (centimos), 1 Pta (peseta), 2 Ptas, 5 Ptas, and 8 Ptas. The typography includes 'CORREOS ESPAÑA' in uppercase at the top left and 'SAHARA DIA DEL SELLO 1970' at the bottom right. The illustrations display various species, including a hawk moth and several butterfly varieties with intricate wing patterns in shades of brown, orange, and tan. The craftsmanship highlights fine-line engraving and multi-color printing typical of the Spanish National Mint (Fábrica Nacional de Moneda y Timbre) of that era. Condition-wise, the stamps appear to be in Mint Never Hinged (MNH) or Mint Lightly Hinged (MLH) condition, as no postmarks or cancellations are visible. They are currently housed in a protective philatelic mount or stock page strip. The perforations appear intact along the edges, and the colors remain vibrant with no sign of fading or environmental foxing.