Vintage Japanese Coaster Set

Black lacquer covered box hold six small coasters. Each coaster has a different Asian inspired design in gold tone. Coasters feel like lightweight plastic. The box is 3.5" in diameter and 2" high with kid. The lid has a lovely design engraved. I'm sorry, I don't know what this made of, but it appears very well done. Only issue is a spot of gold tone is missing from the outside rim of cover. Please see photos for more details. Made in Japan sticker on bottom. This is a great vintage set.