MARTIN SEIDEL, AN EXTREMELY FINE, UNIQUE AND IMPORTANT LARGE SILVER OPENFACE HIGH-PRECISION DETENT CHRONOMETER WATCH WITH ONE-MINUTE FLYING TOURBILLON CONSTRUCTED ACCORDING TO ALFRED HELWIG WITH GUILLAUME BALANCE AND POWER RESERVE INDICATION

MARTIN SEIDEL, AN EXTREMELY FINE, UNIQUE AND IMPORTANT LARGE SILVER OPENFACE HIGH-PRECISION DETENT CHRONOMETER WATCH WITH ONE-MINUTE FLYING TOURBILLON CONSTRUCTED ACCORDING TO ALFRED HELWIG WITH GUILLAUME BALANCE AND POWER RESERVE INDICATION
SIGNED MARTIN SEIDEL, RUDOLSTADT, MANUFACTURED IN 1938
Movement: gilt, half plate, one-minute flying tourbillon with Helwig-type carriage, detent chronometer escapement, Guillaume anibal-brass compensation balance with eight gold temperature adjustment screws and four gold quarter screws, free-sprung blued steel balance spring with outer terminal curve
Dial: matte silvered, large subsidiary seconds and power reserve indication
Case: Three-body, silver rimmed glazed cuvette, 60 mm. diam.