I bought this at a yard sale today, I can't tell if its a mint error or post mint. It is literally half of an SLQ divided by a jagged line down the center. Date is not visible, the jagged edge looks extremely grainy and rock-like. It was only one dollar, so if its post mint, its still pretty cool.
Looks like it could be a 'ragged clip'. If the punches overlap the ragged ends of the strip, a resulting ragged area of missing metal occurs.
I'd like to hear what the error experts think of this one. It strikes me that if half a planchet got in the striking chamber, there might not be enough overall pressure to strike up detail to the ragged edge? Also, how would the rim get worked up in the upsetting mill...does it have a milled edge too? Just curious...it's interesting to see. Another possibility is a defect running through a whole planchet that was later broken in half post-strike? Just a few ideas...
looks like it was pretty well circulated, maybe a planchet issue that resulted in it coming apart after the stress of some circulation.?.
It certainly appears that the crack occurred post strike as opposed to the opposite. Maybe as suggested the crack was influenced by a containment in the metal, but whatever caused it, I am certain that it was post mint...
It would be very hard to break a coin in half, without having bent edges, as silver bends and is not really fragile. There is a magician's trick involving breaking a coin in half, I'll google it and see if I can find some info. EDIT - I can't find it, but David Blaine shakes a quarter, and it breaks in half. Also, he bites a coin in half.
If it is silver. I've seen pot metal castings that crystallize and break like that and I've seen broken cast counterfeits like that. Just got a Moroccan counterfeit in last week where a piece had broken off like that.
Maybe it was super cooled in liquid nitrogen and then struck with a cushioned blunt force. Or MAYBE it was Teslas!