help identify this pendant for me

[Seabee]

The pendant is about 1 1/4 inches in diameter. The quarter is to show size of pendant. Does it look familiar to anyone? I can not identify it. using a jewelers loupe the rim is quite pitted as if it has been in the ground for a long while.
Seabee

 

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This thread might be of interest...

http://forum.treasurenet.com/index.php/topic,127264.msg928680.html#msg928680