This 36.5mm. circa 1965 Grand Seiko Chronometer reference 5722-9990 from the 1960’s is a superb original example. The stainless steel case is unpolished with beveled edges, original winding crown, beveled polished hands, original dial and gleaming and fantastically accurate manual winding caliber 5722A chronometer grade movement (just serviced). My watchmaker LOVED this movement! This movement offers a quick-set date feature. The gold Grand Seiko emblem on the screw-back is intact. These watches are grossly undervalued and becoming hard to find with the original crown etc. Grab it while you can. These fine Grand Seiko vintage watches appear large on the wrist due to the chunky and extended lugs.