That tender appears to be a 210F75 with the F meaning freight. It isn't the correct tender for a T1. The tender in the photo was used on I1s, J1, M1 etc, class locomotives. The T1 tender didn't have the notch at the front of the coal bunker as well as many other things that were different such as rounded coal boards and water cistern.
One thing in common was the 4 axle trucks.
I did see one real T1 running in service in about 1950 coming in to Baltimore over the Northern Central. Many folks have told me I am wrong about that as the turntable at Orangeville (Baltimore) could not handle a T1. They are correct but seem to forget the wye that was there also.
Check out old issues of the PRR T&HS magazine and you will find that the initial T1 tests were performed between Baltimore and Wilmington or Philadelphia as I recall with the T1 backing out of Baltimore station.
Some days it is good to be old.
