On another watch forum I posted images of this, my dad's old Omega. No one was able to ID it precisely. I looked at some AWESOME old Omega catalogs online but could not find this particular piece. I carefully opened it but the movement is not visible as it is encased in the back cover plate. Any ideas as to what this could be? thanks!

 

The model number is on the caseback.

Which is stilll attached to the movement in your pictures. Pics of the movement and caseback and we can give you info.

 

I may be completely LOST here but I cannot see a way to get to the movement other than from the front. The caseback is smooth and one piece. I don't know if that can be appreciated from the pics.

 

You can use a blade to lever the dial + movement away from the caseback. It looks just like the rectangular cases from the thirties which operate in that manner.

 

ahhh. i see.
i dont think i have the cojones for that.

 

Hi,

judging from your pictures it should be possibly to lift out the movement by holding the gold caseback with two fingers and gently pulling the crown towards you. The caseback has a slot for the winding stem/crown, so this should help you to separate the two parts. You can even pull out the winding stem so it's easier to get a hold of the crown.

 

Sorry, using the stem and crown as pry bar would not be advisable.

 

And a knife would be? Using a knife between the dial and movement as a crowbar and consequently putting pressure on the dial feet? No option is ideal, but the crown is probably best, especially considering that the winding stem is an easily replaceable part.

Any person not familiar with watches should stay away from a watch with a knife.

 

I would recommand to a beginner to use a knife or anything made of metal! Usually, there is a small palce where you can put tweezers or something to softly lift the dial. Easy when you have practice, but you have to be carefull not to damage anything, in particular the balance (sometime the little place is close to the balance!).

My guess would be a 620 or 625.