Another Balaclava: 1930s Longines

S setible

However, there are a few things that dont add up here:
- Roland was accurate;
- other sources on the internet also mention the thickness of 27.O
-my own late watchmaker tried once to save a scraped 27.O movement by placing it in a 12.68z case, but it could not, because of the thickness (thats what he told me).