Anon. An unusual silver openface self-winding independent centre seconds watch with up and down indicator Unsigned, dial signed Non Plus Ultra, circa 1830 The full plate gilt-finished movement wound by a round oscillating weight, the white enamel dial with outer Arabic five minute divisions, sweep centre seconds, centred by inscription Non plus ultra , eccentric small hour dial with Roman numerals, fan-shaped up and down indicator, in circular plain case with ribbed band, unsigned 52 mm. diam.
Anon. An unusual silver openface self-winding independent centre seconds watch with up and down indicator Unsigned, dial signed Non Plus Ultra, circa 1830 The full plate gilt-finished movement wound by a round oscillating weight, the white enamel dial with outer Arabic five minute divisions, sweep centre seconds, centred by inscription Non plus ultra , eccentric small hour dial with Roman numerals, fan-shaped up and down indicator, in circular plain case with ribbed band, unsigned 52 mm. diam.
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
