Question about naiad crowns

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watchswede

·Apr 28, 2021

Hi wonderful people of this great forum!

I recently got send the wrong crowns, after trying to correct this without success I ended up with these three naiad marked crowns. They measure 6mm in diameter and 3mm in thickness. The question now is, where do they go?

 

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Franco

·Apr 28, 2021

I think these are reproduction (fake) crowns, have seen them sold by a Singapore and a Canadian seller on eBay.
Have no metal crimping on the back of the teeth. They have 26 teeth, but are not those for 2995-1.

 

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watchyouwant

·Apr 28, 2021

100 % correct, Franco. Kind regards. Achim

 

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watchswede

·Apr 28, 2021

Franco

I think these are reproduction (fake) crowns, have seen them sold by a Singapore and a Canadian seller on eBay.
Have no metal crimping on the back of the teeth. They have 26 teeth, but are not those for 2995-1.

Thank you for a super quick reply. I thought I´d struck gold but it appeared to be the opposite 🙁

 

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Amg786s

·Apr 30, 2021

Forgive my ignorance but what is 'Naiad'?

 

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Flip

·Apr 30, 2021

Amg786s

Forgive my ignorance but what is 'Naiad'?

Omega experimented with a pressure sealing crown they called the “Naiad” (“water nymph” in Greek), which sealed tighter with increased water pressure. Good idea in theory but proved less reliable as the Naiad crown had a tendency to leak in shallower water where the pressure was less.
Rolex had similar issues with their “Super Oyster” crown.

 

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Franco

·Apr 30, 2021

To note is that "Naiad " is a type of crown and there is no mark for it-only sme characteristic shape of the logo, number of teeth etc.

What the OP describes as "Naiad Marked" is in fact the mercedes-like little symbol. This was in fact used for only a few years , until 1962-ish when was no longer used.

 

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Caliber561

·Apr 30, 2021

Flip

Good idea in theory but proved less reliable as the Naiad crown had a tendency to leak in shallower water where the pressure was less.

Pretty sure this was just a myth. Naiad crowns tended to fail because the seals weren't maintained properly over time, thus allowing for water ingress.

 

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Flip

·May 1, 2021

Caliber561

Pretty sure this was just a myth. Naiad crowns tended to fail because the seals weren't maintained properly over time, thus allowing for water ingress.

Either way, not as reliable as the screw down crown 😀

 

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Caliber561

·May 1, 2021

Flip

Either way, not as reliable as the screw down crown 😀

Screw-down crowns will also have water ingress if seals aren't maintained. You also have to worry about debris mucking up the threads and causing them to wear down, so as with most things, there's a trade-off.