First post but Third Luger

[Mason1]

Here are better photos. At least this has gotten me to thougherly disassemble and clean it. The Grips are not original to the gun, when I ordered it sight unseen I was asked if I wanted the plastic grips or wood, thinking at the time all plastic grips were replacement I asked for wood.

Does anyone know what the ”T “on the back of the frame stands for?

These pictures were taken with the metal completely free of oil. The more I looked the more certain that everyone was correct about it having been refinished.

Any additional information would be greatly appriciated.