Catalogue for Identifying Watches by Year Using Manufacturer Serial Numbers
The largest watch companies kept records and ledgers of manufactured products, and for such companies, the date of manufacture can be determined by the serial number on the watch. By contacting the manufacturer, you can, in some cases, even find out about the date of sale, as well as to whom and for what amount a particular watch was sold.
A. Lange & Sohne (Lange & Son) Serial Numbers.
IWC (International Watch Co Schaffhausen) Serial Numbers.
Longines Movement Serial Numbers.
Omega Movement Serial Numbers.
Jaeger-LeCoultre Year Identification.
Patek Philippe Movement Serial Numbers.
Vacheron Constantin Serial Numbers.