Agreed. A normal ball serif mint mark. There were multiple versions in use during 1946.
https://www.lincolncentforum.com/sa...mark-styles/
This is what the IMM looks like:
http://goccf.com/t/450791
http://goccf.com/t/441907
https://www.lincolncentforum.com/sa...mark-styles/
This is what the IMM looks like:
http://goccf.com/t/450791
http://goccf.com/t/441907























