Omega 1916-1923 Vintage: Worth Buying

Hello new friends! I've recently developed in interest in Horology and vintage watches specifically. I found this posting on Chrono24.com. The seller is a Chrono24 trusted seller out of Germany. Currently asking around $700 for this watch ....

Pictures:




What I Know:

From the Seller:
"Produced between 1916 and 1923.
Chrome plated brass case.
White dial with black enamel and indexes.
blued hand.
Small seconds at 6 o'clock.
mineral crystal.
Case diameter: 34 mm (without crown).
New neutral brown leather strap.
Neutral pin buckle in steel.

Status:
Good clean condition.
All functions properly. "

That's pretty much the extent of my knowledge.

What I Need Help With:
I don't know enough to understand if this is a good price, too good a price, etc. I don't know how to accurately judge if this is a wise purchase. Aesthetically I like the watch a lot. Though I know it's quite inexpensive by quality watch standards, $700 is unfortunately not a small outlay for me.

Owned or Being Considered:
Being considered. I have made an offer, which was accepted, but have not purchased.

Thanks so much for your help everyone!

I know nothing, but picking up on this idea, the movement looks the same as the one in post #4 in this thread. The dial is not dissimilar.

http://forums.watchuseek.com/f2/do-you-have-your-grandfathers-your-fathers-watches-590073.html

The dial and hands are nice but it's definitly not an original omega case. Agree with JiminOz, the position of the regulator is bad. I wouls skip. For 700 euros you can have a much better watch.

Thank you everyone for your advice! Really appreciate you all saving me from a regrettable first foray into vintage horology 😀