Would this be considered a 1964 PR DDO

[pdi]

I see what looks like notching but I’ve heard that sometimes it’s just a common die for a date. What looks like notching to me is the upper right of E,T and Y of Liberty. Thanks for taking a look at it for me.

https://www.lincolncentforum.com/forum/attachment.php?attachmentid=163946&stc=1https://www.lincolncentforum.com/forum/attachment.php?attachmentid=163945&stc=1https://www.lincolncentforum.com/forum/attachment.php?attachmentid=163944&stc=1

[rlmillerjr]

I see some notching in E T Y, I couldn't see any thing listed, me old and blind though :)

[jfines69]

There are some dates that had master die doubling and off hand I can not remember if 64 was included nor can I find my reference... Will need to do a little more research!!!

[pdi]

I was thinking that was what it was. I have seen some reference to master die doubling that is on every coin made with a particular die. Thanks for taking a look.

[jfines69]

I was thinking that was what it was. I have seen some reference to master die doubling that is on every coin made with a particular die. Thanks for taking a look.
Hopefully I can find the references again!!!