Omega - 5087245 - 1900-1949

Overview
This is a vintage OMEGA mechanical pocket watch from the “red 12” (red-number 12/24) series. The white dial features a 12/24-hour double scale: the outer ring shows black 1–12 numerals, and the inner ring shows red 13–24 numerals. It also has a small seconds subdial at 6 o’clock. The layout is easy to read and has a strong period character.
It comes with a vintage-style beaded pocket watch chain and a leather box (as shown). The watch runs after a basic winding test and is working / keeping time (not tested for long-term accuracy).
Key information
Brand: OMEGA
Type: Mechanical pocket watch, manual wind
Functions: Hours, minutes; small seconds (6 o’clock)
Dial: White dial, black 1–12 + red 13–24 double scale; OMEGA logo visible
Hands: Ornate (fancy) hands with a warm/gold tone (see photos)
Movement: Gilt movement signed OMEGA; movement serial number 4337795 (see photos)
Case: Engraved patterned case; the back has dark decorative inlay/finish (partly worn, see photos) and an applied gold-tone crest/badge
Inner cover / hallmarks: The inner cover shows prize/medal markings and the text “Grand Prix Paris 1900”, case number 5087245, a 0.900 mark, and other punches (see photos)
Dimensions & weight
Case diameter (excluding crown/bow): approx. 48.61 mm
Overall length (including crown/bow): approx. 67.10 mm
Weight (watch only): approx. 75.22 g
Condition
Dial: Clear signs of age; hairlines/cracks are present, and there is a small enamel loss/chip around the 4–5 o’clock area (see photos).
Crystal: Intact and clean.
Case: Patina; the decorative inlay on the back shows wear/loss of color.
Movement / timekeeping: Runs after a basic winding test and keeps time; service history unknown; not tested for long-term accuracy.
Accessories
One beaded pocket watch chain (see photos)
One brown leather box (see photos)
Photos form an important part of the description and may show details more clearly than text. Please review all images carefully and assess the item accordingly.