pretty sure it's a franken autavia...
already seen a few month ago on ebay...many times proposed by the seller before it finds any buyer.
universal geneve assymetrical first execution space compax case and bezel without the UG screwed rubber pushers .
the brevet number on the caseback is the UG ones...
dial may be adapted from something like a 73663 , would be interresting to see the dial's back.
regards