Now it does serve another purpose, it is supposed to be recorded in the service guide (warrenty book) that comes with the writing instrument. 145, 146, 149.quantities of all, and unless they came in at the same exact time, the numbers show a diverse arrangement of letters and numbers. I see these numbers every day (I do work at a Montblanc Boutique) and there really is no method to the madness. It is in a nutshell.a tracking number, just like UPS and FedEx have on thier packages. MB does not keep an active list of 'serial numbers' to authenticate authorized or unauthorized product. That way Montblanc can always trace back the writing instuments path from their departure at the headquarters all the way to their final selling destination. The official name for these numbers is 'Quo Vadis Number' (Latin for 'where does it go') It is registered during the manufacturing process and, subsequently, allocated to Montblanc's receiving subsidiaries or agents worldwide. I've posted this before, so here it is again regarding MB 'serial numbers': At the Boutique they will hand them back over and if you send it to the factory service center, they will send back your pens and a letter stating either way if your pen is genuine or fake. And lastly, Montblanc does not confiscate counterfeit pens. The logo 'PIX' was introduced on the underside of the clip in 1997. Serial #'s are now being reissued or reused, so the same # might be found on 2 different pens made years apart. There is no database at Montblanc of serial #'s except for limited editions. Some of the #'s started with GE or GER on the first pens to be produced with serial #'s in 1991. Older models will most likly have fewer digits than current production. Serial #'s don't have a specified number of digits. I talked to a nationaly known pen shop as well as Montblanc again this morning regarding my serial numbers and other issues regarding my recent trade for a couple of older Le Grand's. MONTBLANC SERIAL NUMBERS - from a pen forum In a word no, apart from thier limited editions, quote from a previous post, hope it helps:

Mont blanc fountain pen serial numbers