Im not so sure its a cludge, but Ive been wrong before. The head block appears to be the same as many 200a in photos, including the one on the museum of magnetic recording website. If I understand correctly what makes an "A" is that the old head block the was set up in front of the tape (oxide side towards operator) is replaced with the one you see in the pictures for the now standard, oxide away from the operator. The electronics and cabinet are all 200. As to the controls they look prototype (like very early 200?) with indicators for function that didnt return to Ampex machines for a while. With the exception of the extra pinch rollers right next to the head block all the top pieces look correct, although it is missing the little cover for the capstan shaft.
Cant tell for sure using just pictures, but I think that is probable one of the very first 200s if not the first.
I want to see it. I need another project like a hole in the head, but.....