Platinum Wrist Watch no. Unknown

Case: Platinum, articulated lugs, "HH" monogram to rear, inside caseback signed "E. Gubelin, Swiss, Platine, 27355?" Dial: Silvered, applied Breguet numerals, blued steel Breguet hands, signed "E. Gubelin, Lucerne" Movement: Circular, nickel, bi-metallic balance with flat blued steel balance spring, signed "... Adj 5 Five Pos., Ninteen 19 Jewels" Provenance: 19?? - Touchon, Geneve 19?? - Gubelin, Lucerne 20?? - ebay