A dime , struck about 98% off-center. It was a single strike. No other coin was involved.
The planchet was way out of the collar but the collar was engaged when this coin was struck. When the hammer die struck the coin, the force of the strike pushed the planchet downward and slightly into the coining chamber causing some of the collar to come in contact with that tiny section. That is what added the reeding. Notice that there is no reeding on the other side.
Have Fun,
Bill