I picked this up in a lot of tiger stripe goods, 2 out of the 3 were very early TSP stuff with white tags about the size of US nam period size tags.
The jacket is heavyweight , very stiff cotton that feels more thicker than say an M65 jacket. It don't have all the TSP features like single button pockets, no collar stitching, dark plastic period buttons, cuff gussets and colour isn't typical vat dyed.
Please ignore the patch setup as i bet it's repro without a doubt.