Wet sand it first with something like 320 grit at the regions that most receive graphics to see if something reveals itself as to the maker.
The seat stay tops as it presents were used by a number of builders. the brazed on cable guide for the rear mechanism may be original, I was actually expecting to see a Campagnolo dropout with a small hole above the mount bolt tang. The Bottom bracket shell is quite simple, the stay ends are kind of earlier in style. No holes for a head badge... Very small chance they were closed up.
I would chemically strip the areas where there was chrome at one time, in case the chrome can be saved, this includes the head lugs and fork crown, just in case. Do this before you go a blasting.
From here I think you may be able to save the skewer clamping surfaces and mask them off at least.