More than one person made Bronze medallions. I've got two separate ones here. I'm pretty sure there was at least one more.
There's Indy Magnoli's above and the one on the previous page by Michael Key (different picture here attached). It's made from the parent of the Acme medallion with more feather detail and solid bronze as well.
I like both as well as Relic maker's that matched the hero prop in the movie very closely. I've got a Sarednab one coming that is equally accurate from what I have read.
MK medallion different views :
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