1300 Camshafts

[STALancia]

I'm about to start rebuilding a 1300 engine, and am gathering information on the various parts. The engine is seized, and after 6 months of soaking with Plusgas / heating the block, etc, there is still no movement, so it's time to open it up. The engine appears to be built from at least a couple of different donor engines (judging by the different colour paint used on the block and the head), and the car itself I know to have been used in hill climbing events, so I don't know what I'm going to find in there!

Removing the cam cover reveals everything to be clean and tidy, so it's clearly been well looked after at some point. First things first, I was wondering if anybody knows the provenance of the camshafts. They appear to be cast with the letters 'P & T' on them. I have another 1300 donor engine which I believe to be more original than the one in the car, and the camshafts in there don't have the same markings.

Picture attached, any help appreciated.