Size of crown tube and crown thread

Bille · Jan 18, 2026

Hi

I hope somebody can help me with some technical information.

I'm searching for an original crown for my:

Omega Constellation
Cal. 551
Reference: 14381 / 2 SC-2

What is the size of the crown tube?
What is the size of the crown thread (diameter)?

Thanks in advance.

Best regards
Jakob

Dan S · Jan 18, 2026

The tube is probably the same either way, but just for clarity, are you looking for a decagonal crown? Some people prefer the scalloped for usability.

amuscare87 · Jan 18, 2026

I’m no help here, but beautiful piece!

Bille · Jan 19, 2026

Dan S
The tube is probably the same either way, but just for clarity, are you looking for a decagonal crown? Some people prefer the scalloped for usability.

Hi Dan

I would like the watch to be as original as possible, so I’m looking for a decagonal crown.

So if you have one you want to sell - og know somebody who has, please let me know.

Thanks.

Jakob

Bille · Jan 19, 2026

amuscare87
I’m no help here, but beautiful piece!

Thanks a lot😊

Dan S · Jan 19, 2026

Bille
Hi Dan

I would like the watch to be as original as possible, so I’m looking for a decagonal crown.

So if you have one you want to sell - og know somebody who has, please let me know.

Thanks.

Jakob

I don't have one to see, but I have never found them hard to find on the secondary market.

Size of crown tube and crown thread

Bille

Dan S

amuscare87

Bille

Bille

Dan S

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