With the pictures the OP provided, you can't tell anything as there are no references. Good full obverse and reverse and then close ups of questioned areas.
I guess I need a definition of mint error. to my knowledge the standards are set as 1. Design flaws. 2. Any damage or mistakes (accidents, or mishandling) from press to loading dock. want to try something? I think I can prove mint errors as to mishandling and makeready. I think!
Your #1 would relate more to varieties than mint errors. Your #2 would all be Post Strike Damage. A better definition (and it isn't completely correct) would be damage or mistakes that occurred before or during striking of the coin. There ARE a few mint errors that can occur after the coin is struck. Three I can think of would be if the coin is struck again, or in the case of the lettered edge dollars being run through twice or not run through the edge lettering at all, or a missed post strike procedure such as the enhanced finish half dollars or 5 oz coins that missed the vapor blasting process.
these blanks... seem to have very very.. if slanted...slight images, nothing definite , but looks like somebody tried, as what I would call make ready..to start up production. what process I'm not familiar with. a us quarter...newer...@5.6 with the same with. but flat on one side and kinda rounded on other. please reply. thxplease see new post blanks
Most bird are plastic but they still make and use metal electrical boxes. You have described a metal blank perfectly. Design flaws, as you call them, are nothing more than varieties. Damage or mistakes from the press to the loading dock are just that-Damage! True Mint errors occur during the minting process, not before and most certainly not after.
Can we see the entire coin. Not just a microscopic portion of *something* .. is it even a coin ?? Without showing the complete, what ever it is ... we are being pushed into using Pareidolia to assume it is something we are being told it is. So in essence we simply guess.