Girard-Perregaux Sea-Scout Gyromatic Bumper Automatic Wristwatch Case 5625 Cal 2084 17J circa 1940s-

Lot description — Sphere Auctions LLC

Notable variant: This is a Girard-Perregaux "Sea-Scout," an early Gyromatic bumper automatic — one of the pioneering self-winding calibers of its era (a pivoting-weight "bumper" mechanism rather than a full-rotor design), and a recognized vintage GP model line from the 1940s-50s. The case number (5625) matches a documented example of this exact model and caliber family.Case is round stainless steel, measuring approximately 32.3mm per direct caliper measurement in photos. Case back is stamped with the Girard-Perregaux eagle-and-anchor "G P" emblem, "Girard-Perregaux 1791, Swiss," "Brevet" (patent) with a cross mark, "Stainless Steel," and case number 5625.Dial is cream-toned with age patina, signed "Girard-Perregaux, SEA-SCOUT" and "SWISS" at the base, with a railway-style outer minute track numbered in fives (5 through 60), applied/painted Arabic numerals at each hour, dagger-style hour and minute hands, and a thin sweep center-seconds hand with a red tip.Movement is signed "GIRARD-PERREGAUX, SEVENTEEN 17 JEWELS, SWISS, UNADJUSTED," with caliber 2084 marked on the bridge, visible bumper-automatic weight and jeweling.Running; stem is missing, so the watch currently cannot be wound or set through the crown.This is a mechanical, automatic watch — timekeeping accuracy may vary, and the missing stem will need to be replaced before normal winding/setting function is restored