Am I correct in thinking that this chrono hand is incorrect for the 3590.50 reference?

 

Yes you are correct, it should be a flat bottom hand if I am not mistaken

 

That chrono hand style appears on the new FOIS and on certain models of 2915 / 2998 but never on a Professional

 

Okay, as I thought, it should have a flat bottom and a spade shaped (what's it called?) tritium filled piece like the photo.

Any ideas where I could I source one - tritium or superluminova? Are they interchangeable between professional models?

 

They are interchangeable. Ebay should turn some up, or a wtb. Should be easy to find...

Or ofrei for that matter, http://www.ofrei.com/omega-watch-hands-caliber-321-861.html

 

Found this on the bay but wants £50 for it. Looks to me like it's missing a pivot sleeve to secure the hand to the post. Unless it's pictured the wrong side. Sorry about my naming of parts incorrectly I am sure.

 

Thanks for heads up with regards to Offrei. I did a search for Chrono hands (which didn't turn up anything of use) but obviously my search skills need much improving. .

 

Here's the search I used.. I find Google returns better results that the built in site search.
http://www.google.ca/search?q=hands+omega+861+ofrei

 

Great tip.

 

Curious. Offrei offers three sweep second hands for the cal 861 - each a different length, 14mm, 14.25mm and 14.75. My thinking is that the 14.75 is correct for the 3590/3570 ref and the other two for the reduced? Can someone set me right on this.