Swiss & German A?LARGE AND EXCEPTIONALLY RARE SILVER OPEN-FACED KEYLESS WATCH THE LONGINES MOVEMENT LATER MODIFIED TO?INCORPORATE A?ONE MINUTE FLYING TOURBILLON WITH SPRING DETENT CHRONOMETER ESCAPEMENT ORIGINALLY RETAILED BY HERPY ARNOLD, BUDAPEST, 1925, NO.4190747
Swiss & German A?LARGE AND EXCEPTIONALLY RARE SILVER OPEN-FACED KEYLESS WATCH THE LONGINES MOVEMENT LATER MODIFIED TO?INCORPORATE A?ONE MINUTE FLYING TOURBILLON WITH SPRING DETENT CHRONOMETER ESCAPEMENT ORIGINALLY RETAILED BY HERPY ARNOLD, BUDAPEST, 1925, NO.4190747