Good point @cla, but since 2020 is only a few years ago, it wouldn't surprise me if every single doubled die isn't yet documented. Now post a coin from the 1970s and I 100% agree that it should already have been found.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz