Here is a rare Omega Seamaster Automatic Calendar Chronometer watch. This case model exists as a regular Seamaster and as a Chronometer Seamaster. Their differences will be the dial print and calibre numbers. This 24 jewels movement is an Omega calibre 564 with a swan neck regulator. It has been fully serviced and running accurately. The date has the quick-set feature. The movement serial number is 28736212, dating this watch to 1969. Factory original finish dial is in very good condition—original signed crown. Originally signed crystal in great shape—brand new 19mm high-quality genuine leather strap. The solid stainless steel original case measures 36.6mm, excluding the crown by 41.8mm lug tip to lug tip. Case model 168.022. The wrist size in the photo is 6 inches.