These are menko (card game pieces) from over 50 years ago. In this area, we called them "Petchi." It seems the name varied by region. The condition isn't great, but there are around 200 pieces, from official hero characters to suspicious bootleg ones. Some have names written on the back, and some are reinforced with two layers. There's a variety of heroes. Some have Grendizer with eyes, and Robocon with stars. I plan to have them appraised by a popular antique buyer, but I'm also offering them to anyone interested in a collection of items from that time. I'm not planning to sell them individually, so I'm offering the entire set in one box. I will send them in the original box they came in.