CROTON nearly mint gents chronograph with depth gauge in steel, Switzerland around 1975, manual winding, satin-finished case, screwed down case back, red-gray bezel with depth- indication, brown fumé-dial, black sub-dials, date at 6, raised black tachometer graduation, rhodium plated movement calibre 7734, 17 jewels, diameter approx. 42,5 mm, overhaul recommended at buyer's expense, condition 2