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alpina, acacia, arcadia, ariston, arsa, aster, bulla, bielco, buren, bwc, choisi, civitas, chronos, dogma, doxa, edo, felco. Fides geneve, freco, frenca, gala, glycine, grana, gustonia, emco, era, hado, helbros, helios, lavina, longines, madix, mimo, minerva, moersi, mulco, nivia, onda, onsa, ope, optina, page, paul, buhre, phenix, pierpont, pront, protex, recird, recta, revue, sport, selza, siegerin, silvyna, syntakt, titus, tsilla, zenith, zentra, tritona, para, leonidas, DH. D.H., D, DU, D.U, militare, military, militaruhr, dienstuhr, dienst-uhr, heere, whermachr, luftwaffe, army, esercito, aviazione, air-force, Airforce, Reich, WWII, militaire, orologio, watch, montre, uhr, lorologiese,
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ONSA  D. U.

11 Ott ONSA  D. U.

CASE  .  Chrome plated,  34mm .

BACK  .  Screw,  steel .

           “ wasserdicht – sthalboden – DU “ . It is typical of other D.U.s  .

           Inside it shows  “brevet” and the Swiss cross .

MOVEMENT  .  AS 1130 

                      It reports the brand name on the wheel bridge .

CASEBACK MARKINGS: .  D. U.  only .

S/N  .  No S/N .