Folded Strike Zinc Lincoln Cent

I was bidding on, but did not win one of these recently. That coin was NGC MS63 and made of copper not zinc, so a bit different, but it sold for $520 as a reference point for what these things can go for.

My reasoning was, "How did it get folded in half?" Thus my determination.

It's a good example of a foldover strike. They are known in every denomination from 1c - 50c. Such errors occur if a planchet enters the striking chamber knocked into a vertical position, if it enters spinning on edge, if it rolls into the striking chamber on edge, or if it's intercepted on edge while flying through the strike chamber. There is no reason to think it was "pre-folded". Pre-folding (probably intentional) is more likely in the case of higher denomination foldover strikes (25c and 50c), as its less likely that retraction of the hammer die generates enough clearance for a planchet to stand on edge.

Foldover strikes can affect any planchet or coin. Double-struck and triple-struck foldover strikes are known (foldover on the last strike). The fold can be symmetrical (axial) or highly asymmetrical paraxial). Finally, a coin struck on edge that fails to fold is kicked out of the striking chamber as an edge strike.

Fascinating example - and appreciate Mike Diamond explanation.

I'm mostly retired and buy/sell junk and antiques as a part time job. Most of the people in the estate sale business contact me if they come across something they know I'd be interested in. One was contacted by someone with an inherited collection & they referred them to me. Among many other things there were 2 binder pages mostly filled with errors. This is one of them.

Very strange?!!!!!? Late on this post.

Is strange because an zinc core at this bend without heat will crack, and this it is no doubt. Any metallurgical person or studies will confirm me. Then I see it is plated also on bend?: how come on bending the plating Cu. will not crack? So was bend after the plating: between plating and strike and miss plating on the strike side.

I think this coin need forensic analyzes. It was strike after second quarter of 1982 and if we look at the mint chain of production I ask myself how can fall with this form in the striking chamber?

I will like to see the other side to analyze..

Remarkable coin for sure!