I think it was the T2 that was more prone. I bought mine with a repaired weld & an unnoticed crack at top of seat tube. The old repair cracked again. Both repaired by a local pro.
^crazy if true. I am almost more interested in the back story of how a bike like this gets into such a state! or rather what happened to the original owner!
I hope the new owner is on here and posts the restoration.
Be warned - the buyer found a crack by the BB so didn't buy it & it's been relisted with no mention of the crack. Spares or repair. Still worth a punt I reckon.