1967 Poland Butterfly Postage Stamp Series (Polska Motyle)

This item is a collection of nine different postage stamps from the Republic of Poland, specifically part of the popular 1967 'Butterflies' (Motyle) definitive and commemorative release. The set features anatomically detailed illustrations of various lepidoptera species including the Peacock, Swallowtail, and Small Tortoiseshell. Each stamp is printed on paper with a distinct colored background ranging from sage green and lavender to ochre and deep purple. The stamps are characterized by their perforated edges and vertical rectangular orientation with denomination values (such as 10, 20, 40, and 7.10) and the text 'POLSKA' at the base in a serif font. The printing quality is high, using multi-color photogravure to achieve realistic textures and scientific accuracy in the wing patterns. These specific specimens appear to be in 'unmounted mint' or 'mint never hinged' (MNH) condition, as they are housed within a clear protective stock sheet. No visible cancellations (postmarks) are present, suggesting they were never used for mailing. The perforation teeth appear intact without significant bending or tearing. This series is a classic example of mid-20th-century Eastern European philatelic design, which often blended scientific illustration with art.