136.020 Omega Seamaster Deville Crystal and Stem

Hello:

First post, and greetings to you all. Thanks for taking the time to read this,

I have a vintage Omega Seamaster Deville from the mid 60s. It appears to have a one piece case, with the back not being removable. The crystal is a signed original, but it has a crack in it. On inspecting this further, I removed the bezel, and the tension ring has a crack on it too, (and fell out). I have some questions if anyone wishes to assist.

1. It appears that a new crystal should be pushed in from the rear of the bezel, is that correct. (Yes, I know I will have to invest in proper fitting glass press. I live in a remote area, and I expect the nearest Omega service center is 1000+ miles away.)

2. If I can find a crystal (PX5072 I think) from CousinsUK or Ottofrei, that is listed as genuine, will it be signed with the Omega symbol?

3. I take it the tension ring is supposed to be bonded to the hesalite? The reason I ask is that I see someone is selling NOS on ebay for $150 and it looks to me like the tension ring on that one is cracked as well, and I have also seen 5072 glass for sale that is just glass says you have to add the tension ring?

4. The movement is Omega 613. Is this a two piece stem?

5. The bezel seems to snap on and off fairly easily. How was this watch ever even close to being waterproof!?

Thanks in advance for any thoughts, answers, or opinions on any of this!

Here are some images. The crystal crack is about where the minute hand is.

The crystal is split right where the split in the tension ring is split, so I thought they had both broken at the same time.

So...Crystal goes on crystal press dome up, then bezel is pressed on to it, over the dome (Bezel is pressed over the top of the crystal?). Then the crystal bezel are turned over, and the tension ring is pressed in from the bottom?

Thanks for this. The tension ring is a puzzle. My 60 year old crystal is done, and the edges are crumbling away, so I cannot use it as a reference.

6. Is the tension ring installed with a press after the crystal is fit in the bezel, or is it fit by hand? I take it that it fits into the Crystal before the bezel is pressed in to place on the watch body?

I also am having problems finding a original 5072 crystal, If I have to, can I get the Sternkreuz "equivalent", and then use my existing tension ring? Or is the tension ring attached with the generic Sternkreuz?

Understood. Thanks. What I want to know is how is it fit into place, since it is a separate piece? The previous post stated to fit the crystal first, fitting the crystal to the bezel from above. Then install the tension ring, but is this done by hand or with a press? How it is installed is the question that I have. It might be obvious when I get a crystal, but the one I have is badly broken around it edges, so I can't see how the tension ring interacts with it.


Any suggestions? I am running out of options, as I am in a very remote location.

Thank you all so much.....this is excellent. Very much appreciated. I checked and there is only one authorized Omega service center listed at the Swatch group for all of Canada, and it is 1500 miles away. I did write them to see the cost of a service and crystal replacement. It will be interesting to hear what they quote. I will probably just put a Sternkreuz crystal in for now, and see what I can sort out for the future. Thanks again.