[Salon de Belle Montres] Hunter cased chronometer with independent seconds and 1/4 sec foudroyante. Chrono time at 3 o'clock and thermometer at 12 o'clock. Ch. H. Grosclaude and Co. SA. Fleurier
aperture=f6.3 focal length: 50.0 mm exposure 1/250 sec ISO: 1250