My brother got tired of discarding all of his mechanically doubled coins, and after about 20 yrs., in the mid 90's started throwing the most extreme ones in a plastic bucket. He knows his stuff, knows they're 'no counts', and knows they're not acknowledged by anyone. He's never been confused about any of them, no wishful thinking at all, a realist. On a rainy day a couple of yrs ago he went thru them, discarded about 75% of them, and kept only the extreme of the extreme. He put them in cardboard displays, denomination being the only organization, not dates or anything else. When he gets the rare chance to show off his legitimate coins, sets etc., het gets congratulated. Then he said, when he shows his extreme 'no count' unrecognized common mechanically doubled pieces, guess what? That's the ones that get the all of the attention, oohs and aahs. Then he has to explain to the ones that are non collectors that they are worthless and why they are. Many are as good as the 1920 example above, and some even more extreme. Why am I bothering to say this? Because I already know the neat collection he has, studied them several times, been there done that. When I go to his town to see him, the first thing we ask is to see his 'no count' pieces. Fun and interesting! So ac80, the ones that aren't real doubled dies, the 'extreme' ones, save them anyway, you won't regret it.