Bidspirit auction | Advertising Poster Butterfly Entomology Postcards

Advertising Poster Butterfly Entomology Postcards Old World Swallowtail - Original antique advertising poster produced to promote the sale of Entomologische Postkarten / Entomological Postcards. The poster features a large, detailed illustration of an Old World Swallowtail butterfly / Papilio machaon, its wings spread wide to showcase its striking yellow and black patterns, accented by characteristic blue markings on the hindwings. Below the central image, the bold German typography reads ”Entomologische Postkarten hier erhaltlich / Entomological Postcards available here. Good condition, staining, tears, creasing. Country of issue: Germany, designer: Unknown, size (cm): 37x23, year of printing: 1910s.