You are right. I was talking about the OEM from Omega. I did not like the Thomas one due to the rounded perimeter.
Sourcing for an OEM display back is really tough now. I paid USD400 for it around 8 years back. Not sure about spacer P/N. My watch maker sourced for me.
I suggest getting a watchmaker to source for you. If i recall correctly, the movement need to be out before fitting in the thicker spacer. It is definitely not a DIY job. Can any gurus confirm this?
Spacer was around USD90. With labour and display back, about a USD 650 job in total. Do factor this cost in your consideration.
Yes I have both and their action is pretty similar. The togman one has round brass type pins and Pahawi's the pins are long blocks which fit nicely into the Speedmaster case back. Pahawi's has slightly more of the pin touching the case and the part which would push against the case is flat so that would be the main benefit.
The reason I use togman's is because it also fits a number of other non Omega cases and I have a few of his openers for various other cases. I have a handle which fits in the top and makes case back opening / closing very simple action which I've become used to.
I agree the OEM looks better but it wasn't worth the hassle or cost to me personally for mine. The Thomas one was less than $100 and a local watchmaker fit it on in less than 10 minutes with no modification or effort beyond removing the caseback and swapping it. Nobody can even see the back anyway other than yourself and the watch looks the same from the side.
My FOIS already has a steel bezel but I guess one of the best upgrades is the hesalite crystal, seen here installed by Lewis Watch Co
Here is the FOIS with sapphire caseback
The caseback tool I use - made by tog_man, gives a very nice fit with minimal chance of slipping or damage
The parts side by side. The gasket is the one that goes on top of the movement spacer
The movement spacers
And finally the case back installed on FOIS
Some points to note if doing this yourself. I use a case back opener from tog_man (ebay seller), I find these work really well and are very straight forward to use. I use finger cots to ensure that my fingers dont touch any of the movement, anti-magnetic cover etc.
When I put back the FOIS case back, it screwed down completely without any major resistance from the o-ring, so I went ahead and replaced the o-ring. It would be advisable to replace the case back o-ring as a matter of course, and also a small amount of silicone grease on the gasket.
Nice! Is it waterproof with the hesalite on it? Who did the relume?
Here is the FOIS with sapphire caseback
The caseback tool I use - made by tog_man, gives a very nice fit with minimal chance of slipping or damage
The parts side by side. The gasket is the one that goes on top of the movement spacer
The movement spacers
And finally the case back installed on FOIS
Some points to note if doing this yourself. I use a case back opener from tog_man (ebay seller), I find these work really well and are very straight forward to use. I use finger cots to ensure that my fingers dont touch any of the movement, anti-magnetic cover etc.
When I put back the FOIS case back, it screwed down completely without any major resistance from the o-ring, so I went ahead and replaced the o-ring. It would be advisable to replace the case back o-ring as a matter of course, and also a small amount of silicone grease on the gasket.
What do you think of these?
https://www.spiralwinderwatchparts.com/product-page/custom-speedmaster-caseback-blank
Not too bad..... the anti reflective coating gives a very clear view of the movement 馃槑
Mine had a very minuscule fleck of dust between the crystal and seal, but I removed the crystal, removed the dust and reseated the crystal.
After fitting the caseback, I then pressure tested the case to 3 bar and no problem with any leaks 馃憤
Looks really good, thank you. The only problem may be missing anti magenetic protection.
Not too bad..... the anti reflective coating gives a very clear view of the movement 馃槑
Mine had a very minuscule fleck of dust between the crystal and seal, but I removed the crystal, removed the dust and reseated the crystal.
After fitting the caseback, I then pressure tested the case to 3 bar and no problem with any leaks 馃憤
Spiralwinder delivers sapphire casebacks with proper spacers for hassle-free mounting at the back of FOIS. Here's mine (with custom laser engraving).
