These are tin parts that came with the Marx Rex Mars Planet Patrol playset. They are used with wear as you can see. They have some scuffs, scrapes, dents and general wear from play. 

I'm not an expert on every item I sell so if I forgot to mention something just ask and I'll try to answer your question. You can enlarge the pictures to get a better look. I will always combine shipping (if possible) on multiple auctions won to save you money. Shipping price if quoted is to the lower 48 states only. All others ask for a quote. Payment is expected within 3 days.