What type crystal?

[Lc130]

Hi All

I'm a beginner trying to determine what type of crystal to order.  The supply house describes them as glued in, compression fit or tension ring.

They would be for a Waltham and Sears Tradition.  Both from late 60's early 70's.  

I was able to easily pop both crystals out.  The Sears crystal has a smooth edge and the Waltham has a lip. Neither had a gasket or ring.

Almost impossible to get clear pictures but these are looking at the inner wall of the case, top up (Sears first)

Any ideas of the type of crystals?

Thank you

Charlie

 

 

 

 

 

 

 

 

[qhartman]

These would almost certainly be compression fit. If you can't find something that is an exact match to the size you need, err to the large side, and you can sand it down a bit if needed.

[oldhippy]

Could you post photos of the case and bezel. 

[Lc130]

The first two (gold) are the Waltham.

 

Thank you

[oldhippy]

I would say if they do not have sweep seconds hands Low dome will fit. High dome if they have sweep seconds. Measure from 12 to 6 or 9 to 3. What tool do you have for fitting crystals?

Just a thought did the old ones have a ring inside the crystal?

[Lc130]

No crystal ring inside either. Both have second hands.  I have a crystal press but not a crystal lift.  Do I need one?

[oldhippy]

So you need the high dome. This tool will take out the crystal and put them in. Be careful of cheap Chinese imitations.

[Lc130]

Thank you

[Lc130]

Follow up...

The Waltham face opening is 30mm.  The old crystal measured 30.2 including the small lip.  The other is 30mm with no lip.  

I honestly can't determine what crystal to select from this supplier.  https://www.jewelerssupplies.com/CrystalsPlastic.html

Any help is appreciated.

 

 

Edited January 9, 2019 by Lc130

[oldhippy]

The bezel looks deep enough. That tool will squeeze the crystal when it picks it up, so a slightly bigger size will fit in.  

 

Go here and look for HD BCL 30.2 then click on Alternatives a small window will open that is what you need buy 2 one for each.  

https://www.cousinsuk.com/product/domed-high-bcl-bhd

I do not understand all the info from your link. You could phone and tell them what you want. 

[Lc130]

Many thanks for your help!