I just got a 52" Kodiak Magnum and I'm pretty sure it is from the 70's. The serial number is KU7888. It is missing the coin. Didn't this bow have a silver coin? And does anybody know where I can get one?

A KU serial# could be 1970 or later. The 70-to about mid 72 would be flush mount gold. Later would be raised silver with a stem. If it is a Green Futurewood riser it would be 73-77.

3Rivers sells a replacement coin similar to the gold coin if that is what you need?

http://www.3riversarchery.com/product.asp?i=3566

You sure it's a coin, not a button?  Is there a small hole for a peg, or a larger depression for a coin?

If you need a coin I have one to sell...Roy

It's green with the purpleheart stripe. And yes, Roy, I would love to buy one. I'll send a PM.