I believe this is a color illustration (supplement) from Margaret magazine during the Showa era. It's two triangular pennant-shaped pin-ups (double-sided) ♥ It's rare, a collaboration between popular manga and popular idols of the time, and the background illustrations are cute with polka dots, flowers, stars, etc. ✨ Since one sheet is a little large, I think it's worth displaying ♪ The size is about 43.5 cm at the longest part of the triangle (the diagonal). When shipping, I will fold it along the original creases (last photo), secure it with cardboard, take measures to prevent it from getting wet, and send it via anonymous Nekopos delivery. For those who understand that this is an old item from that time, thank you. I also have other shojo manga from that time (Weekly Shojo Friend, Bessatsu Margaret, etc.) for sale.