E. A. Séguy “Papillons” Plate I — Birdwing and Swallowtail Postcard

Plate I from E. A. Séguy's “Papillons” (1925) groups five butterflies in a dense, jewel-toned arrangement: a black swallowtail marked with red at the top, a glowing emerald birdwing at the centre, and three smaller species in green, black-and-white, and yellow-and-black patterns.

• Density: 350 g/m²
• Size: 10×15 cm

The boldest colour combination of the four plates — well suited to a mail art envelope that needs to stand out in a stack.