15mm blue-gray "horn" buttons typically used on M36 and M40 Tunics at the cuffs and neck, as well as M37, M40 and M43 Keilhosen on the pockets and in the fly. It's not uncommon to find them on M42/43 tunics as well.

These are reproductions, but they look very close to the translucent blue-gray swirl of the originals. Sometimes used on later model tunics, trousers, shirts and caps.
Price is for 1 (one) button.