I have two Waltham Riverside pocket watches with 19 jewels, adjusted to 5 positions and micrometric regulators. The watches are from the same run and date to circa 1910. Both movements are engraved with the broad arrow mark and a 2 letter, 4 digit serial number:-

1. Serial number 17045543 HW 1017
2. Serial number 17045613 HW 1079

The first one I acquired about 3 years ago and was a movement only that I have put into a gold filled case just for protection.
The second one arrived a couple of weeks ago and came complete. It is housed in an American Keystone silveroid screw case of the correct period and there are no other movement screw marks. The rear cover is engraved with the name of 'Bravingtons' a company that specialised in selling off British military surplus in the 1920's.
I wondered if anyone had any information regarding the use these watches would have been put to?

1st watch.

2nd Watch.

2nd watch rear cover.

Are you sure that Bravingtons sold surplus watches in the 1920s? Every reference I have seen so far has them selling British Army surplus watches with their name stamped into the backs in the late 1940s and early 1950s.

This is an advertisement from a 1921 edition of Punch Magazine.

This one is from the February 9th, 1921 issue of the Punch Magazine.

Thanks, Peter! I had never seen those before.

I have now found a third Waltham 17J Riverside watch with similar British engraved markings on the movement.
The first two watches were from the same run of the 1899 Model and so I assumed that the complete batch would have come from that run.
I assumed wrongly.
The third watch is from the later 1908 Model and dates to 1914. Not only that, but the HW number falls between the other two watches, which seem to indicate that perhaps some of these watches were stock held at the Waltham Factory?
17045543 HW1017 Model 1899 1910
19015033 HW1055 Model 1908 1914
17045613 HW1079 Model 1899 1910