Platinum & diamond Wrist Watch no. ???

Case: Platinum & diamond ladies wristwatch. Dial: White, arabic numerals, blued steel hands, unsigned. Movement: Eterna calibre 610, 6''' baguette 7.25x22.5mm, nickel, 2 adjustments, capped escape wheel pivots. Production of this calibre by Eterna started in 1930. Provenance: 1930 circa - Eterna, Grenchen 1930 circa - Niton, Geneve 1930 circa - Van Cleef & Arpels, Paris 2016 - Dr. Crott Auctioneers, 12 November 2016, Frankfurt Airport, Germany, Lot no. 192, "Platinum case with diamonds (brilliant-cut and baguette-cut), Case; 8 x 23 mm, Inscription mvt; Niton Geneve, Seventeen 17 jewels, Swiss, Adj to two positions, Inscription case; Van Cleef & Arpels, Country of Origin France, Function; simple hour, minute"