I just picked up some original rolls of the above mentioned
LMC's. Three rolls of D and 2 rolls of P. One of the P rolls is stamped with " U.S. Mint Opening Ceremony Hodgenville, KY".
It was reported that $5,000 worth of the new pennies were exchanged at the ceremony. Initially, attendees were allowed to exchange currency for a maximum of $5 worth of the new pennies, although they were allowed to go through the exchange line more than once. Towards the end of the ceremony, people were allowed to buy $25 boxes of the new pennies.
It seems rolls were postmarked with the place and date of the ceremony, then the stamp destroyed.
My question is, were all 10,000 rolls postmarked and is that the only way to authenticate as a first day of issue?
I am wanting to go through these rolls for some possible 67 grades or maybe better. Would a high grade example have more value if certified first day of issue?