MK Personal Collection Steel Rolex Oyster Speedking Glossy Tropical Dial Wristwatch Ref 6420 Circa 1961. The watch features a three piece stainless steel case with screwed-down case back with original winding crown, stamped on the inside back cover 6421, between the lugs 6420 Serial # 776.135, high grade Swiss Rolex movement Serial # 42467. C.170 manual wind nickel plated brass 17 jewel movement with a Superbalance, Breguet-hairspring that is in running condition. The watch will need an overhaul in order to keep accurate time. The watch is topped with a fantastically rare and original black tropical painted glossy dial with etched square gold indexes.

MK Personal Collection Steel Rolex Oyster Speedking Glossy Tropical Dial Wristwatch Ref 6420 Circa 1961. The watch features a three piece stainless steel case with screwed-down case back with original winding crown, stamped on the inside back cover 6421, between the lugs 6420 Serial # 776.135, high grade Swiss Rolex movement Serial # 42467. C.170 manual wind nickel plated brass 17 jewel movement with a Superbalance, Breguet-hairspring that is in running condition. The watch will need an overhaul in order to keep accurate time. The watch is topped with a fantastically rare and original black tropical painted glossy dial with etched square gold indexes.