1899 British antique JW Benson BANK pocket watch, sterling silver open face, in good working order

We would like to introduce pocket watches from JW Benson, a watch manufacturer that is a supplier to the British Royal Family.
Benson is a watch manufacturer founded in England in 1840, and is a very popular brand in Japan, known for being a favorite of Jiro Shirasu and others.
[Brand Introduction] JW Benson

This is an open-faced pocket watch with a sterling silver case and is engraved with the year 1899.
The movement is a British-made hand-wound "BANK" movement.
The Benson with its cursive logo is very popular and is a simple, heavy-duty watch that is typical of British watches.
It is unknown if it has been overhauled, but the balance wheel is in good condition and ticks along smoothly.


We hope this once-in-a-lifetime encounter will be a special one for you!

(Explanatory video)
I will add it later

【condition】
Appearance: ★★★★☆ Excellent condition with no noticeable scratches or stains

Function: ★★★★☆ Maintenance history unknown but in good working order

-Case: There is some wear over time, but it is in good condition with no noticeable scratches or dents.
-Case markings: There is a sterling silver hallmark from the British Financial Services Agency on the inside of the case back.
・Dial: In very good condition with no cracks or missing letters. ・Other: The crystal is made of mineral glass and has no scratches or chips.
Accuracy: Approximately 1 minute per day when measured with a flat timegrapher
Power reserve: Confirmed from full spring to 45 hours

*The daily difference may vary depending on your posture, so please use this as a reference only.
*It is very old, so I don't know the history of parts replacement or repairs.

【detail】
・Brand Benson (JWbenson)
- Year of manufacture: 1899 (London)
Movement: Mechanical
・Mainspring: Manual winding
・Time setting dowel press (nail set)
・Serial No. 892522
Case material: Sterling silver (925/1000)
・Case diameter 51mm (excluding crown)
・Case thickness 17mm (including crystal)
・Weight 117g

*This is an antique item and there is no other item that is exactly the same.
If you have any questions, please feel free to ask.