Mold marks? / Manufacture flaws

By Joe Clausi; posted March 28, 2014

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There are a total of five of these thumb print size depressions located all around this insulators skirt surface. 3 are located on the front skirt side, while 2 are on the back, with having only one of those 2 back skirt side depressions being faint/shallow, so not very easily noticeable, but it is there.