Thanks for all the input guys.

 Im currently doing the leg work of trying to make sure that these puppies aren't stolen. Does B&O keep any type of database of stolen items and the seriel numbers so that I may check with them ?

Sorry to be the first with a "clear" negative input, but I think that you should be extra careful.

Have you already parted with your Cash?

Have you had any contact with the seller afterwards?

Loosing the pincodes is something I can understand, but what I can't understand is not getting them back...

Is the last owner (the one you bought them from) the original owner? Or is he a second owner?

If he's the second owner, he should have contacted the first owner and get the pincodes back... Since they are only four digit-codes, the first owner might even recall them!

Anyway, it will be much easier for the original (first) owner to get the codes back.

Did you get the original invoice? I wouldn't buy pincode protected B&O without the original invoice...