Sarpaneva Korona K0 Northern Stars - Serial #5 (Pre-Owned)Capture the vibes of a Nordic night with the SARPANEVA K0 Northern Stars by Finnish Independent watchmaker Stepan Sarpaneva. For his iconic moon phase watches, Stepan modifies the quick set calendar mechanism of the Soprod A10 caliber to work perfectly as a moon phase complication. Stepan introduces a wheel with 59 teeth (two teeth for each day of the 29. 5 day cycle) in place of the date wheel which ordinarily has 31 teeth. He then takes added steps