Today I was on the flea market and between a rubbish I've found the Omega Speedmaster Racing. I don't belive in its authenticity because of the strange details I've never seen before in this model. It looks like the Speedmaster Michael Schumacher Racing 2002 housing connected with normal Date Mark 40, but with the strange elements (see the marks on the photos). Can you tell anything about that?
Fake non of those watches had a year Complication. That would make it a perpetual which would never be in a low end watch. Never seen a speed master without a screwed in caseback. Fake Schumacher mk40 hybrid. http://www.ablogtowatch.com/michael-schumacher-omega-speedmaster-vintage-watches/ Too see all the Schumacher watches.
More wrong on that one than right, however there are lots of Speedmaster models with snap on case backs. Pretty much all the 7750 versions of this era have snap on case backs, as does the Speedy Snoopy, and all the sides of the moon watches...