12-Hour Recorder” Eduard Koehn

“12-Hour Recorder” Eduard Koehn, Genève, No. 78414, made for Tiffany & Co. New York circa 1905. Very fine 18K gold, keyless 5- minute-repeating dress watch with splitseconds chronograph and instantaneous 60-minute register. Four-body, “bassine”, polished, case back with monogram “JM”, gold hinged cuvette. White enamel, Breguet numerals, outer minute divisions, outermost chronograph track divided into fifths, register at 12, subsidiary sunk seconds at 6. Blued steel “spade”hands.