New to Vintage Omega World -- Needs help assessing a 2998!

Hello all,

I am a "seasonned" vintage Rolex collector but am totally new to vintage Omega.

However, I have always been on a lookout for a nice 321 Speedmaster.
I recently stumbled on this one and would like the experts around here to help me assessing it.

http://www.antiquorum.com/catalog/lots/omega-ref-2998-2-lot-285-84?page=3

First of all, is it correct to have a stepped dial for this sub-reference? Shouldn't it be a domed one?
The hands looks original too me but shouldn't the chrono hands be white painted?
For vintage Rolex, dial condition represent at least 80% of the watch value. Is it the same for vintage Speedy? In that regards, and given the fact the dial on this example is far from perfect, is the estimate of 5k$-8k$ reasonnable?
I understand that the "Base 1000" bezel itself is quite valuable...

Many thanks for welcoming me here and I look forward to be enlightened by your answers/advices.

Best,
Fab.

Thanks for answering!
Serial number is 17302525, as stated on the catalogue. I saw you just sold your 2998-4 for around 10k$. So I guess this one should be going for at least this, eventhough the dial is not as good as yours...

Thanks!

The photo has been enhanced so much that i cant work out the colours of the chrono and sub dials- im not an expert but they look unpainted, they should be white. From my reading most 2998-2's have domed dials- but this is a nice tropical stepped dial -if you like them... id be happy with the dial as long as the price is right but would want to see photos of the rest of the watch!?. Id be tempted as a project watch if i wasn't chasing another piece, although not keen on auction houses.

im sure the experts will correct me if im wrong and offer more substantial advice,

mike