Sparkle Dials - let's see 'em!

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gotcha, thanks for the additional information on some differences
 
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Here's mine - 166.0XX - exact reference is on a hard drive buried in a box somewhere.

As long as I'm posting, a couple of questions for the experts, if you don't mind...

Is an unsigned crystal of this vintage always indicative of an aftermarket replacement, and does the crown look too small?

 
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Here's mine - 166.0XX - exact reference is on a hard drive buried in a box somewhere.

As long as I'm posting, a couple of questions for the experts, if you don't mind...

Is an unsigned crystal of this vintage always indicative of an aftermarket replacement, and does the crown look too small?

166.032 reference
Yes pretty sure all of the crystals from that era are signed in the centre. Doesn't impact value that much tbh though so don't worry about it. If you did ever change it in the future, just make sure you get one with the correct colour tension ring
Crown looks ok to me, likely a service replacement which is fine as the original was likely worn out and a source of moisture ingress
 
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166.032 reference
Yes pretty sure all of the crystals from that era are signed in the centre. Doesn't impact value that much tbh though so don't worry about it. If you did ever change it in the future, just make sure you get one with the correct colour tension ring
Crown looks ok to me, likely a service replacement which is fine as the original was likely worn out and a source of moisture ingress
Thanks for the response - confirming as I suspected these answers to my questions.

Fired the old guy up today. Regretting that I trimmed my fingernails yesterday! 😁
 
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Here's a pair:

Rule of thumb - for these models the solid caseback says waterproof for the 18k gold models and has the omega symbol for the non solid gold ones.
 
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Thanks for the response - confirming as I suspected these answers to my questions.

Fired the old guy up today. Regretting that I trimmed my fingernails yesterday! 😁

Here's a pair:

Rule of thumb - for these models the solid caseback says waterproof for the 18k gold models and has the omega symbol for the non solid gold ones.
Lovely pair!
Mine has the omega logo on case back and it's a 9k 166.5032
 
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Thanks for the help on the above!

Unfortunately a bit hard to source / out of my budget with the 19mm endlinks.

For anyone looking for a cheaper bracelet with good fitting endlinks, this might be a good option.

I came across this listing on chrono. The guy told me he went for the FOIS 19mm BOR bracelet, and that the end links fit great. Poor photos but it looks pretty good.

Edited: