Today's arrival was a little unknown!
I bought the watch without any movement pics... so was not sure what I was going to find!
The case (which there was a pic of in the listing) dates the watch to 1917/18, Glasgow, John Weir (Sponsor) and the Borgel trade mark.
I recognised the layout, but could not think where!
A quick search came up with one of my watches (happens more and more). My 1914/15 Dennison screw case which has this movement.
As you will see (if you look at the Dennison thread), I ID the watch back to Tavannes, due to the Pat number 'U.S. PAT 24 MAY 1904', which appeared to be a patent granted to Henri Sandoz (founder of Tavannes).
I also have another Cyma Borgel with a different layout. This dates to 1915/16 and was ID'd as: Cal 13''' Ref 370 Savonnette. The movement looks like:
Which when compared to my new arrival (dating to 1917/18)
There are certain similarities with the screw/jewel locations and Transmission wheel, Ratchet wheel and Click... but its the base plate where its clear to see these are the same base movements... the 1917/18 on the left
Looking at the 3 different Cyma movements I have... todays arrival appears to be a mix of the earlier 2 ones
The top row shows the 3 movements. 1914 Dennison (Left), 1915 Cyma Borgel (Middle) and todays 1917 Cyma Borgel (Right).
The bottom row shows a mix of the 1914 and 1915 (Left), which uses the balance cock and bridge from the 1914 and a reduced barrel bar from the 1915. Bottom Right that overlays this mix with todays arrival (1917), with all parts lining up!
Today definitely appears to be the higher grade of the 3, with 16 jewel movement and screw in chatons... The hands on the watch are not quite right and it needs a service (runs ok as is...), so will add finished pics once complete!