Here is a rare Omega Seamaster Automatic Calendar watch. This bumper automatic calendar watch is the first generation of the "Seamaster Calendar" model. The 17 jewels movement is an Omega caliber 353 with a swan-neck regulator. It has been fully serviced and running accurately. The movement serial number is 13106745 dating this watch to 1952. Creamy-aged original waffle dial in excellent condition. Gold original set of dauphine hands and hour markers. Original signed crown. Crystal is brand new. Brand new 18mm matching high-quality genuine leather strap. The gold capped over stainless steel original case measures 35.3mm excluding the crown by 43mm lug tip to lug tip. Case model 2627 - 7 SC. Calendar feature working accurately. This watch is in its original unpolished condition. Great investment timepiece! Wrist size in photo is 6 inches.