It's simple. Any coin, token or medal with a wreath back reverse. Post yours as well..... I'll go first.
Here's an old one! Roman Empire Aemilian (Jul-Oct 253) Sestertius, Rome Obv: IMP CAES AEMILIANVS P F AVG Rev: VOTIS / DECENNA / LIBVS / S C in four lines within laurel wreath. 14.11g, 25-27mm dia. RCV 9862, RIC 54(a).
I really don't remember how or when I acquired this item. But it's one of the unique items in my collection I think it's brass. It flat on the back with no markings.