50L has the "T"
71L doesn't have it
90L has the "T"
Both "T" stamps are identical. They're the large one Rog. I can't remember if my 74L "TP" has a small one or not. Would it be under the bracket? If not, it doesn't have one. It sports the Canadianownership mark on top of the breech like most of them do.
All of mine are former Britishowned except the "TP".
---------- Post added at 12:19 PM ---------- Previous post was at 12:18 PM ----------
Thinking about the 74L "TP" and I'm pretty sure it doesn't have the "T" stamp.