Possible rare find 0

[Creshonsky]

So I have found  a 1947 s mint penny missing t  in trust. ( TRUST  ). The T may have been a build up during stamp. Thought one might of tried to forge. But same thickness and weight. And ideas?

[Tridmn]

Have any pics to go on

[Greenstang]

Sounds like a minor grease filled die but will need pictures to verify.