By the way, those allow codes would be visible on all interior upper skin surfaces. In the case of my 1:48 Ta 152H-0, I've offset them a bit, so each of the 3 visible panels in each bay (see upper surface panel lines), have the alloy codes running in different directions... Also, the formers that run across the wing, will also sometime have codes printed down them (they're just machine formed 'corrigated' sections) - they seem to be in the same alloy at the upper surfaces...
And on the subject, I have a new set of graphics just completed in 1:32 (and 1:48 shortly) for the 'Late Style' Werk Nummern and Wheel-Well Alloy codes that I am considering offering for sale (as no sheets out there ATM, doe these things right), if ppl are interested...
Dan