1950s Swiss DELBANA men's watch, 15 jewels, gold plated case, in good working order

We will introduce vintage watches from Swiss DELBANA.

DELBANA is a Swiss watch manufacturer founded in 1931, and this is a men's wristwatch from around the 1950s.
1For a watch of this era, this is a dress watch with a large yellow gold-plated case with a diameter of 39 mm and gold bar indexes.
It is unknown whether 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)
https://youtu.be/UynH5Xq7UIU?si=P1LzLOwdQppLqTuj

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

Function: ★★★★☆ Maintenance history unknown but in good working condition (daily accuracy within 5 minutes)

- Case: Has signs of wear and small scratches, but has been well maintained
・Dial: There are some small stains but no rust.
Other: The windshield is made of acrylic and has no scratches.
- Belt: Replaced with a new leather belt.
Accuracy: within 3 minutes per day when measured with a flat timegrapher
Power reserve: Confirmed from full spring to 44 hours

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

【detail】
・Brand: DELBANA
・Year of manufacture: 1950s
Movement: Mechanical (15 jewels)
Case material: Gold-plated, alloy
・Serial No. 1451124 (case)
・Case width 39mm (excluding crown)
Lug: 46mm
・Case thickness 10mm (including windshield)
Lug width: 20mm
・Belt: Leather (brown)

*This is a vintage item and there are no other items exactly like it.
※If you have any questions, please feel free to ask.