International warranty
Longines is delighted you have chosen a timepiece from its collection, which lives up to the brand’s long-established know-how, based on research combined with technical excellence and timeless elegance.
Both numbers can be found on the caseback, if the serial number is missing it suggests that the watch is made some time after 1974. The serial number will be 6 or 7 digits long and the reference will be 7 digits or more normally with 1 or 2 spaces in it. If either contain dots or letters then it is most likely after 1974 and not possible to decode using this decoder. To look up specifications for a particular Certina movement instead try the Certina movement decoder. Please include any. Certina Waterking Circa 1960s Model 7101 022 Serial number 5271978 Certina 28-16 handwind movement 17 jewels Solid steel case All original parts Steel screw down case back Case measures 36mm wide 42mm lug to lug and has 18mm lugs Case shows very well Dial shows very well Crystal has scratches Pallet fork is missing Service history is unknown.
La Compagnie des Montres Longines, Francillon S.A.* grants you, with effect from the purchase date, a twenty-four (24) month warranty on your Longines ® watch and a five (5) year warranty on models with a silicon balance-spring, on the terms set out in this warranty.
Date your Certina by looking at the serial number. 1938 0.000.000 1961 3.900.000 1948 1.300.000 1962 4.200.000 1949 1.500.000 1963 4.500.000 1950 1.700.000 1964 5.000.000 1951 1.900.000 1965 5. Scan the QR code, Follow us on WeChat, and experience CERTINA World!

The Longines international warranty covers defects in materials and manufacturing that exist at the time of delivery of the Longines watch purchased (“defects”). The warranty takes effect only if the warranty certificate has been dated and fully completed by an official Longines dealer (“valid warranty certificate”). During the term of the warranty and on presenting the valid warranty certificate, you are entitled to have any defect repaired free of charge. In the event that repairs cannot restore your Longines watch to full working order, La Compagnie des Montres Longines, Francillon S.A. undertakes to replace it with an identical Longines watch or another Longines watch with similar characteristics.
Excalibur Wind Up Watch With Serial Number

Accuracy: Star VS SARB035
The warranty for the replacement watch expires on the same date as the warranty for the replaced watch.