The bubbles are just that....and that was an extremely common defect on post composition change cents of the early 1980s. Sometimes it's a bad plating job. Sometimes it's a result of corrosion under the plating. Sometimes it's gas bubbles under the plating.
As far as the rotation, if it is more than 15% you may have something ...Less than that is interesting but doesn't add much of anything to the value of the coin.
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