![]() This Croton Chronomaster Aviator Sea Diver 9870 was introduced in 1969, and it was produced until 1978. It includes a micrometer regulator, and the mechanism oscillates at a frequency of 18,000 vph (2.5Hz). It's constructed with 17 jewels, an Incabloc shock absorber device, a straight-line lever escapement, and a self-compensating Breguet flat balance spring. 107-75209 is from the 1960’s and is fitted with a Valjoux V7733 movement. This dial variation is known to collectors as a reverse panda dial. The reason was that Movado (who was already selling watches in the USA) filed suit against Nivada and claimed that Nivada was too close to Movado and. Price: 3,850.00 ADD TO CART About the Watch This Chronomaster Aviator Sea Diver sports an eye-catching white tachymeter and white subdials. 248/Valjoux 7733 mechanical manual-winding chronograph movement. The original Chronomaster Aviator Sea Diver was built by Nivada and marketed in the USA as the Croton Nivada Grenchen by Croton Watch Company in New York, from 1961 until about 1970. This Croton Chronomaster Aviator Sea Diver 9870 has a Landeron cal. It has a 45-hour power reserve at full wind, and the 14mm thick case, dial, and movement are all signed. There are twin recessed white 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 steel baton hands with luminous inserts, and a red center sweep chronograph seconds hand. There is a black dial with luminous baton hour indices around an outer minute/one-fifth second scale, a red marker at 12 o'clock, and the perimeter has a tachymeter to 600 UPH. ![]() 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. SWISS." It has a black bi-directional 60-min bezel with 2 time zones. 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. It has a shell cordovan strap with a stainless steel tang buckle, and a scratch resistant sapphire crystal. 1970's stainless steel Croton Chronomaster Aviator Sea Diver 9870. More about Vintage Chronomaster Aviator Sea Diver SS ![]()
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