Paul Ditisheim, Fabricant, La Chaux dr Fonds. Movement No. 11075 case No. 16075, 52 mm. diam. 143 Gr. A gentleman's extremely rare pocket watch with Seconde Foudrayante and with optoelectronic seconds indicator. Case: silver, radial engine-turned,gold bow and bezel. Dial: two-coloured silverd, engine- turned center. Sunk auxillary seconds pirced, radial " Seconde Foudroyante dial, " at "5": Movement frosted-gilt, System Guillerminet , polished screws "Patent 14978, wolf-teeth winding wheels, gold compensation balance.