


The first two or three digits describes the type of watch. The number is located at 12 o’clock between the lugs and under the bracelet. Model Numbers: Rolex model numbers range from four to six numbers. In the late 1950’s, Rolex again reached the 999,999 production serial & they started their 7 digit numeric numbering system at 1,000,000 for production serials, this continued until the 1990’s until production serials reached 9,999,999. Look for the Roman number I, II, III or IV for the quarter & two arabic digits for the year.

During this period Rolex was also putting the date code on the inside of the case backs…so confusing production serials can sometimes have their production date determined. *** When Rolex reached the 999,999 production serial in the early 1950’s…they restarted the production serial at 100,000 rather than begin a 7 digit number at 1,000,000. Confused…contact Rolex with the exact serial number of your watch…don’t expect a reply with an answer! The latest letter prefixes are all running concurrently…as Rolex wishes! Only Rolex knows the exact date that any watch was actually produced. (ROLEX without the O) N, C, & S came out during the early to mid 1990’s, W, T & U a little later. ** In 1987, rather than begin an 8 digit production serial, Rolex instead began their serials with a letter prefix such as R, then L, E & X. Below is a list of the letters that have been used and the dates they represent.* We have seen G serialed watches that were produced in 2012, so Rolex is using both the mixed and the G at the same time.

The number is preceded by a letter, this letter represents the year of the watches production run and can be used to date the watch. The edition numbers shows your watches number out of a its production run for example number 1 out of 1000 (K0001/1000). These numbers started in 1997 and have been ascending since. The serial number which is useful for recording a watches provenance normally starts with the letters ‘BB’ but ‘PB’ has also been used. Small changes in a case design over years can see the case number change for its model. Different Panerai models may share the same case and so have the same case number. Starting with ‘OP’ and normally followed by 4 numerals, the case number identifies the case used on the watch. The majority of Panerai Watches will have the following numbers: Unlike some watch brands, Panerai case backs are very helpful providing lots of useful information that can be used to identify and age a watch.
