Trying to remember if I have seen a blue sub-dial hand on a Speedie prototype/project racing before? Prototypes/projects are a bit of a mystery to me but some collectors love them so suppose the problem is trying to establish originality 50 years on. Saying all that I think this is nicer than the 1969 ones that have been on the market recently. There is an archive extract that says "black racing with luminous indexes" so that makes it quite distinctive. Lucky for me I have a no bidding on prototypes rule which saves me lots of money Oh just noticed no Ts on swiss made and no professional, as mentioned in MWO, so definitely one for the experts http://www.sothebys.com/en/auctions/ecatalogue/2016/important-watches-ge1604/lot.203.html
Non-Professional dial in a "Professional" lyre-lug-case? And the blue subdial hand looks off. Scratching my head on this one in other aspects aswell.
I'm pretty sure the non Pro markings are legit for the 145.012 racing version... more here: https://omegaforums.net/threads/speedmaster-145012-67-racing-dial.24756/
also, one sold at Phillips earlier this year.. http://www.phillipswatches.com/omega-speedmaster-ref-145-012-67-sp/
No idea about the originality of them - but the three different sub hands look cool. Especially the light blue
Who can really say for sure that blue hand wasn't a factory fit? On a watch that otherwise looks as un-tampered with as that one, and with the other known quirks of the racing dials over the years, it actually wouldn't surprise me if it'd always been there. It's that cool regardless that IMO it's not a watch to discount on account of a subdial hand that may not match up to what's usually expected.