Tanaka Kikinzoku Hoshi Esmark Coca-Cola Cufflinks Vintage The material is unknown as it is not marked. Set with a tie pin; the gold-colored one does not have the Hoshi Esmark. Due to the age of the item, there are discoloration, minor scratches, and stains from use and long-term storage. Please understand this is a vintage item. Cleaned as much as possible with disinfectant wipes. Yu-Yu Mercari Mail Yu-Packet Post Mini shipping (anonymous) Yu-Yu Mercari Mail takes time to deliver. * Shooting accessories are not included. * I do not have my phone on weekends and holidays. I am often in a place where there is no signal, so contact and shipping will be delayed. Please be sure to check my profile.