Three vintage pieces - verification & valuation

These three vintage pieces caught my attention, but frankly I'm just getting started with vintage timepieces and would appreciate your help with verification and valuation. The idea is quite simple - if any of these watches would be a good buy I'd like to purchase it, renovate and sell for a profit (or maybe keep one for myself, not quite sure yet). Below all info & pictures I have atm.

1. Omega Seamaster 17 jewels cal.710, ref number 165.007 (as far as I can see on the case back), one hand is missing, approx. 32.5mm without a crown, dial with some stains, last servide date unknown, priced at 245$ but I believe it would sell for 200-210$.

2. Black Dial Omega, not sure about model or ref number, according to the listing produced in 1939, +5mins per day, 32.5mm, last service date unknown, priced at 270$ but would probably sell for 200-220$.

3. Omega Calatrava, ref. 9005415 (?), year 1938, 32.5mm, runs without issues but last service date unknown, priced at 345$ but again I pressume would sell for less


Be as critical as you can, like I mentioned earlier I'm just getting started and haven't bought these watches yet, deals look kinda promising, but I'm not an expert by any means so would like to get your opinions first.

Thanks!

Welcome to the forum,
How much will you pay for our expertise?
If you’re aiming to use our knowledge for your profit while you admit you don’t know much, surely we must be entitled to a cut ?
Best regards

Got a chuckle out of this thread. If you are paying attention, these responders are some of the most senior OF members, and I would suspect that they are having a little sport with you---due to the unfortunate wording of your question. Generally I would say that they would normally provide more technical info than you would currently be able to comprehend.
I am not in any of their skill and experience levels, but I have done a lot of research on this and other forums, and made generally decent buys because of that due diligence. Even I can tell you that those three watches you are basically parts donors, and not worth much. Buying them would be akin to playing with Uranium for an hour or so. Spend some real time in here, reading and paying attention to what the veterans consider important, and what gets them all in a tither. Listen mostly, and ask understandable questions that are well thought out and not a waste of anyone's energy. And of course don't say, "I am here to pick your brains for free and then profit on your labor". Who knows, after 200 posts maybe you will have learned something, made some good scores, and can actually sell your watches here.

Perhaps one of the most hilarious first replies to a post I can recall

2 and 3 are obvious redials. There's no profit here.
These are not desirable watches.