Hello,

Does anyone here know the difference between these 2 clasps?
I can’t see any difference from photos and they both fit 18mm straps on the clasp end. I’m trying to purchase a deployant clasp for my Speedy

Thanks!

 

I believe xxx883 is the old style with round head and XXX893 is the newer style with trident head..or the other way around

 

Thanks for the response, both are the new style with the trident head...and as far as I can see both are the same.

I’m wondering whether it is to do with the physical dimensions of the clasp...

 

Maybe call an OB and ask them to look up the clasps?

 

I contacted my OB as well, will post their response here that being said, my experience with the OBs is that they do not know the details of the accessories very well.

In any case I was hoping that someone here knows it already...

 

@Exarkun12 I have three Omega OEM deployant claps.

XXX1893 (trident, 18mm, brushed SS) came with my Speedy 57, XXX1813 (18mm, round head, polished SS) and XXX1613 (16mm, round, polished SS).

Perhaps the 1883 is trident head and brushed SS or Ti. Check some postings here

 

ditto! been there myself!

 

based on what I have seen so far, both XXX1893 & XXX1883 are trident, brushed SS, 18mm.

Strange. Still waiting for my OB to come back to me...

 

It would be good to know what the differences in these clasps actually is. I have a spare 20\18mm 94521833 but I wouldn't know how it differs from any other Omega 20\18mm clasp.

 

using the format 9542XXYZ
- XX is the width of the buckle where it connects to the strap in millimetres (ie 16mm, 18mm, 20mm)
- Z is the metal, 3 for steel, 6 for yellow gold, 7 red gold, 8 white gold, 9 titanium (I haven't seen platinum yet, if someone has one, please do share )
- Y is possibly a combination of the length of the clasp (short or regular), its finish (brushed or polished) and style (round/trident). Y might also mean different things depending on the metal being used.

 

This image was taken from a dealer catalogue. They're appear to be the same but 94521883 is marked with "strap thickness 2.7mm"
No images in the catalogue to compare them.

 

Thanks for that! Really useful information! Seems like the clasps are basically the same but for different thickness of straps..

Does anyone know the 'standard' thickness of Omega straps? Seems like the 2.7mm is a non-standard size...

 

Ok looking at the table in more detail..i reckon the 94521883 is for the thicker planet ocean straps...the 20mm clasps also have the asterisk indicated.

Which means for the normal Speedmaster leather straps the correct clasp should be the XXX893...

 

Best guess is that the 2.7mm thickness straps are the newer style with the insert, like such:


That would seem to make the most sense, as they still offer straps without the insert which are naturally thinner at the holes mounting position, like such:


Having owned a lot of the modern 18mm clasps (94521813, 94521833, 94521873, 94521883, 94521893, CTZ002303) I did notice a very slight difference between how the straps were secured in said clasps looking back on it, but never felt the need to pair a certain clasp with a certain strap. The reason being - the design of the Omega clasp is much more dependent on the side to side measurement of the strap for security and movement vs the to to bottom measurement. And while I've used the thicker straps with the inserts on all 18mm clasps I sometimes noticed that they were a little more finicky to fully engage the catch mechanism, ie needed to push the parts of the clasp together tight before the teeth engaged.

Bottom line - the Omega clasp usually works with any Omega strap of the same width.

 

When I bought the rubber strap and deployant clasp from an OB for my AT, I got the 94521883 version - the sales person at the OB looked up the part numbers and ordered them. The AT rubber strap does not have the insert where the holes are.

 

My OB gave me the information that the clasp that comes with the silver snoopy is the XXX883 version, so Yinzerniner is spot on...

 

Confused... any confirmation on the differences between the two?

 

Was at a OB in London over the weekend, and even the staff there did not know the exact difference. However I was told that the 94521883 comes with the rubber Planet Ocean straps, the Silver Snoopy and Aqua Terra. The 94521893 comes with the speedmaster leather straps (e.g. moonphase, racing master chronometer, etc). And to confirm, both references are trident, with the exact same finishing.

I am quite convinced though about what Yinzerniner said, i.e the 94521883 is better suited for straps with the holes insert, whereas the 94521893 is for 'normal' leather straps without any inserts.

Hope this helps for everyone trying to find information on this archaic world of Omega deployant clasps

 

Thanks... are you sure you dont have the two mixed up? It seemed the 93 was the thicker one.

This video shows the 93 to be horribly thick in my opinion...

 

the video shows the 883, not the 893...and the video shows the 883 being used with the rubber planet ocean strap which is basically what the OB told me. In any case both the 883 and 893 look virtually identical, you won't be able to see the difference from a video.

and of course if you compare the 883 with the old clasp 813, there are differences in size since the design is different. I for one prefer the newer trident design..