British vintage Benson alloy rectangular case wristwatch works well

Description

We would like to introduce a vintage watch from JWBenson, a luxury jewelry store that is a purveyor to the British royal family.
JWBenson is a watch maker with a long history founded in 1847, but after the factory disappeared in World War I, it made watches using Swiss manufacturer movements as a luxury jewelry shop.

It is a watch with a rectangular case called Rectangular, which is rare in Benson.
The movement is made in Switzerland, but the case is a British luxury case maker Denison case.
The belt has been replaced with a new open type one.
The overhaul history is unknown, but the balance swing is good and it is ticking and moving well.

We hope this lovely vintage watch will brighten up your day!

condition
Appearance: Slightly scratched and dirty Function: Maintenance history unknown, but in good working condition (less than 5 minutes per day)

(explanatory video)
https://youtu.be/zvTJ_0U6o8s

Case: Although there is wear on the whole, it is well maintained and is in a beautiful state.
Case engraving: There is a Denison case engraving inside the back cover.
Dial: There is some dirt, but there is no problem with visibility.
Belt: It has been replaced with a new open type black leather belt.
Accuracy: Approximately 1 minute per day when measured with a flat timegraph
Power reserve: confirmed from full mainspring to 44 hours

*The daily difference will change depending on the posture difference and the winding condition of the mainspring, so please consider it as a reference.
* Since it is very old, I do not know the history of parts replacement and repair

detail
Brand JWBENSON (Benson)
Manufactured in the 1940s
Movement mechanical type (15 stone Swiss made)
Serial No.88138 (Case)
Case material metal
Case width 20mm (excluding crown)
Lag – lug 38mm
Case thickness 10mm (including windshield)
Rug width 16mm
Belt open type leather (black)

*Because it is a vintage item, there is no other item that is exactly the same.
Please feel free to ask any questions if you have any questions.