Eberhard. A large, charismatic and rare stainless steel single button chronograph wristwatch

Eberhard. A large, charismatic and rare stainless steel single button chronograph wristwatch
Signed Eberhard & Co., movement no. 11'422, case no. 12'649, circa 1920
Cal. 16000 mechanical jewelled movement, black lacquer dial, painted baton and Arabic numerals, outer five minute divisions and telemetre scale, inner spiral tachymetre scale, two sunken engine-turned subsidiary dials for constant seconds and 30 minutes register, large circular case, sloped bezel, downturned lugs, snap on back, oval chronograph button in the band, case, dial and movement signed
40 mm. diam.