Out of curiosity, what does the 105 stand for on these Lemania Dials?

Both are from the 60s and are 33-34mm in diameter.
The first has a cal. 1280
The second a cal. 1275


Thanks

 

Nobody knows? Even @Northernman

 

Basically it signifies a budget version (cal 127x/128x) of their chronograph offerings:

 

Interesting. Thanks for the information.

 

The 23xx (CH27 - column wheel) based chronographs are described like this:


I love the phrase:" .. elegantly flat, or waterproof."
It shows a bit of the focus they had back in the days.
BTW: The information was valid as of 1956.

 

And I guess the difference between DeLuxe and the 105 is the column wheel.

 

The two mechanism from both watches pictures above.

 

Obviously, there is more to it than just the column wheel but it does play a big part.

 

Yes.
- Breguet spiral.
- Regulator with catch device for hairspring:


And several other modifications.
As stated by Lemania the 12xx family was the budget alternative to their "De Luxe" models.

 

You can see the rather crude design of the "budget" models - cheap wire springs in abundance...even compared to the 1973 (861) those are quite crude...