This is a very collectible advertising key chain from “Allison Turbo Prop Engines In First US Transport” which is marked on one side. The other side has a lovely raised depiction of a turbo prop plane probably from the 1930’s or 1940’s but, it may be older. The ring is marked 12K gold filled. The Figural portion weighs Approx. 7.8 grams. Please ask all questions prior to purchase and look closely at my photos.