Can you mod a Sinn 104 dial & movement into a 556 case?

sand_roll

10 months ago

I really like the 104 dial & handset, but I'd rather have it in the bezel-less 556 case. Is this do-able? Both are Sellita SW200 based. The dial sizes look roughly the same. Apologies if what I'm suggestion is an abomination. My curiosity must be quenched!

Yes

13 votes ·

#polls #sinn #modding

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sand_roll

· 10 months ago

Yes, I do know about the Sinn 556 Isetan Limited Edition, which was pretty much a 104 A dial in a 556 case. But there were only 50 of these made and I dig the minute track of the 104 more.

Photo from u/BigMoufPosy on Reddit

Ya_boi

· 6 months ago

Dude this would be sick. Definitely not an abomination in my opinion. Like you said, with the movement being the Sellita sw-200 base it should be doable if the dial diameters are the same between the two watches. You would also need the movement holder from the 556.

From what I’ve been able to find on a web search, the 104 has a dial diameter of 32mm and the 656 has a dial diameter of 30mm.

I couldn’t find the dial diameter for the 556 listed online, but I have swapped my 656 dial/movement/movement holder directly into my 556 case without issue so it’s safe to assume the 556 dial diameter is also 30mm.

Bummer, this would be a rad Isetan 2.0 version 556 if it were possible.