Just 2 possiblities about the little "O" 's :
1. Air bubbles that came to the surface while the resin was setting up.
2. The maker used a 2-pronged tool to test the resin to make sure it was hard enough to pull the grip out of the mold ? Maybe the left and right grip were poured in a common mold so only 1 of the 2 grips needed to be tested with the pronged testing tool.
3. Any other ideas ??????
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