Serial Numbers

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Dear all,
Could anyone kindly explain me how the serial numbers on Panerai are made?
Thanks in advance, I appreciate
Rgds,
J.
PS: I have the following numbers on mine OP6635/BB1148126 (which seems very strange!!)

 

[hooligan]

You might find this helpful....

http://www.paneristi.com/reference/serialnums.html