Croton 9870 Vintage Chronomaster Aviator Sea Diver SS (28279)

28279 Croton Vintage Chronomaster Aviator Sea Diver, stainless steel case on a shell cordovan strap, manual wind chronograph caliber Valjoux 23, beautiful original black dial with orange patina, original broad arrow hands that match the patina on the dial, unpolished case, original bi-directional 60-min bezel, circa 1960s, diameter: 38mm, thickness: 12.3mm, Excellent Condition with European Watch Company Pouch and 6 Month Warranty.

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More about Croton 9870 Vintage Chronomaster Aviator Sea Diver SS

This is a vintage c. 1970's stainless steel Croton Chronomaster Aviator Sea Diver 9870. It has a shell cordovan strap with a stainless steel tang buckle, and a scratch resistant sapphire crystal. There are round chronograph push buttons with a screw-down winding crown, and a solid screw-down case back, inside of which is hand tooled a sunray pattern and engraved with "CROTON INTERNATIONAL WATCH CO. INC. - SWISS." It has a black bi-directional 60-min bezel with 2 time zones. The 38.5mm diameter solid two-body case, downturned lugs, and bi-directional rotating flat bezel with a 60-minute dive scale with Arabic numeral hour markers every five minutes, are polished/brushed. There is a black dial with luminous baton hour indices around an outer minute/one-fifth second scale, twin luminous dots at 12 o'clock, and the perimeter has a tachymeter to 600 UPH. It has luminous broad arrow steel baton hands, and a center sweep chronograph seconds hand. There are twin recessed black subsidiary dials, including a running seconds register at 9 o'clock, and a 30-minute chronograph totalizer with a red 5-minute regatta countdown wedge. It has a 45-hour power reserve at full wind, and the 14mm thick case, dial, and movement are all signed.

This Croton Chronomaster Aviator Sea Diver 9870 has a Valjoux caliber 23 mechanical manual-winding chronograph movement. It's constructed with 17 jewels, an Incabloc shock absorber device, a straight-line lever escapement, and a self-compensating Breguet flat balance spring. It includes a micrometer regulator, and the mechanism oscillates at a frequency of 18,000 vph (2.5Hz).

This Croton Chronomaster Aviator Sea Diver 9870 was introduced in 1969, and it was produced until 1978.