So i was searching through more rolls of pennies i have gotten from the bank...and if anyone remember the first thread i had about my 1983 double die reverse http://www.cointalk.org/showthread.php?t=38274 ....everyone had told me it was machine doubling rahter than double die....is it possible for a machine to do a machine doubling the exact some on two coins on the obverse and reverse? cause i found ANOTHER one the exact same doubles if anyone could help please let me know! thanks
Sure it's possible. Mechanical doubling is caused when a die gets a bit loose in the press or there is a vibration - something moves at the end of the strike. So if one coin has it, it stands to reason several will until the problem is fixed.
