Modding 1861 Speedmaster With 321 Service Dial

Posts
23
Likes
47
tl;dr I sourced a 321 Professional service dial on eBay. I found a local watchmaker and he installed it in my 1861 (Big Box) Speedmaster. I am extremely happy with the result.

After much research on this forum and other spots I determined I wanted to try this mod, putting a 321 service dial (specifically one for the professional 145.012 models) in my 1861. What I gathered about the mod was this: it will fit, but a watchmaker has to shorten the legs on the 321 dial and shave the legs' diameter a bit as well.

I shot from the hip and bought a dial that I found on eBay in Switzerland. The back of the dial is engraved with the number PP2001002A, like this one that was being sold here for $300 back in 2017 (I paid triple that). I had a local watchmaker in mind to do the work who had done a service on my dad's vintage Rolex, but after I bought the dial and asked him, he is now too busy with his business venture (shout out Cincinnati Watch Co) for outside repair work. So I asked some others and discovered another roadblock I was unaware of: That any Omega-certified watchmaker is forbidden from performing mods like this. So my excellent local AD watchmaker said he couldn't do it.

I despaired a little bit but then reached out to the AWCI (which happens to be HQ'd here in Cincinnati), who referred me to an independent watchmaker about 1 hour drive from me, who they felt was of excellent caliber and could do the work. I called him, he said he'd look at it, I drove out, and dropped it off. He did the work and when I picked it up, I recorded this video of him explaining it a bit:


Very pleased with the result. It's a delight to me every time I wear it and look at the time.


 
Posts
1
Likes
0
That is super cool, I just got mine Speedmaster (2nd hand, but it was our anniversary present from my wife <3), the watch is an older model, post 1999. Have some minor scratches (I cleaned up with polywatch) now I'm just trying to clean up some minor dings on the tachymeter and thinking I may watch to swap out the hands as the minute hand is loosing some of the lum...just not sure if I should try to take it to a watchsmith or send it in for service? Curious about your thoughts since you obviously know a lot about these watches... Thanks in advance
 
Posts
2,251
Likes
2,517
tl;dr I sourced a 321 Professional service dial on eBay. I found a local watchmaker and he installed it in my 1861 (Big Box) Speedmaster. I am extremely happy with the result.

After much research on this forum and other spots I determined I wanted to try this mod, putting a 321 service dial (specifically one for the professional 145.012 models) in my 1861. What I gathered about the mod was this: it will fit, but a watchmaker has to shorten the legs on the 321 dial and shave the legs' diameter a bit as well.

I shot from the hip and bought a dial that I found on eBay in Switzerland. The back of the dial is engraved with the number PP2001002A, like this one that was being sold here for $300 back in 2017 (I paid triple that). I had a local watchmaker in mind to do the work who had done a service on my dad's vintage Rolex, but after I bought the dial and asked him, he is now too busy with his business venture (shout out Cincinnati Watch Co) for outside repair work. So I asked some others and discovered another roadblock I was unaware of: That any Omega-certified watchmaker is forbidden from performing mods like this. So my excellent local AD watchmaker said he couldn't do it.

I despaired a little bit but then reached out to the AWCI (which happens to be HQ'd here in Cincinnati), who referred me to an independent watchmaker about 1 hour drive from me, who they felt was of excellent caliber and could do the work. I called him, he said he'd look at it, I drove out, and dropped it off. He did the work and when I picked it up, I recorded this video of him explaining it a bit:


Very pleased with the result. It's a delight to me every time I wear it and look at the time.



Great mod & I’ve watched this video on YouTube and a few you done before with the difference on the cases between the 1861 & 3861. Must say it’s almost perfect just wish the 3861 movement and sapphire back was available.

Wonder if the subtle differences on the lyre lugs (viewed from top) could be done to the 3861 as it was on the 1861.
 
Posts
277
Likes
416
Very cool. Love the applied Omega logo.
 
Posts
222
Likes
1,759
Just what I was looking for. Thank you.
I am planning on doing the same with my 60th anniversary speedmaster. Cream-color relumed dial and hand set are on the way:

Now I just have to hope that my watch smith can do the dial feet mod.
The cutting should be straight forward and I am thinking sanding down the thickness of the dial feet if he doesn't have a tool that can cut the diameter.
Thanks again
 
Posts
5
Likes
0
Hi everyone. Looking to do the same build with a 3594.50. Does anyone know if the current 064PP2001002A service part is the same applied logo Pro 321 step dial that the OP used?

There's an old thread (https://omegaforums.net/threads/replacement-dial-for-speedmaster-105-003-64.110709/) where it appears to be the correct dial but the thread started with a discussion on the non-Pro 321 dials so I'm not too sure. Looking at one right now dated from 2020 but it's covered up in the original Omega packaging so want to be sure that it's the exact same dial before buying it. Thanks in advance.
 
Posts
580
Likes
741
Just what I was looking for. Thank you.
I am planning on doing the same with my 60th anniversary speedmaster. Cream-color relumed dial and hand set are on the way:

Now I just have to hope that my watch smith can do the dial feet mod.
The cutting should be straight forward and I am thinking sanding down the thickness of the dial feet if he doesn't have a tool that can cut the diameter.
Thanks again
Ha, I was about to post this here, but you beat me to it!

For those interested in reluming a contemporary luminova dial in a fauxtina style, I worked with Jack at [email protected].

And I was going to put an actual 321 movement into my Trilogy with this dial but decided to move on from the Trilogy before I could have it done.
 
Posts
222
Likes
1,759
DIal and hands have arrived. I will see my watch smith on Wednesday:

 
Posts
1,747
Likes
3,512
Good to see these found a new home, and will make a nice watch again. I made a "luminova" ck2915 from a FOIS
 
Posts
1,747
Likes
3,512
Looks very good and congrats !
What change to the dial feet did your watchmaker had to make for it to fit ?
 
Posts
580
Likes
741
Final result. Very happy with it. The closest I will ever got to a CK2915:
If only you could drop in a 321 ; )
 
Posts
758
Likes
1,706
Final result. Very happy with it. The closest I will ever got to a CK2915:

Interesting... Did you just want a darker dial?
 
Posts
222
Likes
1,759
Very nice result!
Thank you
Looks very good and congrats !
What change to the dial feet did your watchmaker had to make for it to fit ?
He sanded down the diameter to fit in the 1861 dial feet opening and cut off a bit over 1mm in length
If only you could drop in a 321 ; )
Too late now with the feet modified. Maybe next time 😀
Interesting... Did you just want a darker dial?
I was not a big fan off the grey washed out dial in combination with the brownish lume. At certain angles it was really hard to tell the time.
The darker dial with the beige lume provides just more contrast for my eyes. Also now the lume is significantly improved.
And I could reverse the modification easily if I wanted to since I still have all the original parts, but I honestly don't see myself ever selling this watch. This one might end my watch collecting for a long time 😀
 
Posts
758
Likes
1,706
I was not a big fan off the grey washed out dial in combination with the brownish lume. At certain angles it was really hard to tell the time.
The darker dial with the beige lume provides just more contrast for my eyes. Also now the lume is significantly improved.
I agree, I sold mine because I didn't really like the grey dial. With a few years of wear yours will look very similar to the vintage 2915!