Platinum Repeating Watch no. ???

Case: Dial: Movement: Provenance: 19?? - Touchon, Geneve 2012 - Sotheby's, 7 Oct 2012, est HKD63-78,000, unsold, " A PLATINUM OPEN-FACED KEYLESS MINUTE REPEATING WATCH CIRCA 1930 18k yellow gold [incorrect, actually platinum] • manual winding nickel lever movement, minute repeating on gongs by steel polished hammers, 29 jewels • silvered dial, applied Breguet numerals, outer minute track, subsidiary seconds • platinum case, plain case, coin-edged band, slide in the band for minute repeating • case, dial and movement signed " 2013 - Sotheby's, 7 Oct 2013, est HKD60-70,000, sold HKD75,000, " A FINE AND SLIM PLATINUM MINUTE REPEATING OPEN-FACED KEYLESS LEVER WATCH CIRCA 1925 platinum • manual winding nickel lever movement, cut bi-metallic compensation balance, 29 jewels, repeating on gongs • silvered dial, applied Breguet numerals, outer minute track, subidiary seconds • platinum case, snap-on case back • case, dial and movement signed "