I will get measurements out ASAP. The Madalion is Bronze. The items on each side of the tomahawks appear to be smoke coming out from the pipe portion of the tomahawk. Will try to get a better close up of the front and back of the madalion.
the picture of the back looks to show some bubbled up areas around the rim which look like rust. my guess is it is chrome or nickel plated steel, and is most likely a concho type decoration from a kids cowboy holster or belt from the 60's