I do own a lot of Omega f300 and 720hz, but this is my fist vintage Omega Automatic. What I already know is, that the crown is not original. I also think that the small second hand does not belong to it. Are there other things that I'm missing as a novice? Thanks for your opinion.
Crown is of a correct style for that era. Is it signed? Too much glare to comment on the seconds hand. Everything else looks OK to me. Just good honest wear on an old watch. gatorcpa
Yes, the crown has an Omega logo, but all ref. 2576 I can find do have a crown with 4 notches, as lando's. Btw, I like the strap very much, thanks for the inspiration. Here you can see the seconds hand without glare.
Crown may be original or a replacement, we will likely never know for sure. Other references from that era have this "bowler hat" crown and they were interchangeable with the Seamaster style notched crown. gatorcpa
Thanks. And what do you say regarding the seconds hand? Btw the crystal has a little crack. Is the PZ5000 really the same shape (dome hight) as the original one?
It's a little short for the sub-dial. Could have been replaced. It should be possible to get an OEM replacement of the correct size. I do not know about the crystal. gatorcpa
You're welcome. You can find it here: https://www.martuleather.com/store/p51/Slim_Greenish_Brown_Vintage_Leather_Watch_Strap.html
Your second hand looks correct, here it is on the left. Possibly, the tip might have broken off. Here's mine
I'm of the opinion that OP's crown is original to the watch. Serial number dates it to c. 1947 which fits well with that style of crown.
That's good for my wallet. Now I just need a new crystal, probably a new main spring (winding by crown is very easy and the watch is only ticking for a view seconds, then stops) and a good cleaning of the movement.
I can see the Omega logo on the photo of the crystal which means it is the original. The scratch can easily be polished out. All that watch wants is proper servicing and it's good to go. Just make sure not to send it to Omega but instead find an independent watchmaker who can handle vintage. Don't just take their word for it, google to see what people say about them.
Movement is now dissembled. As assumed above, the main spring is broken. The rest of the movement, except for one balance screw, looks very good.