Saw what I thought was a Montblanc rollerball pen at a second-hand seller. It had all the hallmarks of a Montblanc, but the resin color wasn't right. I bought the pen and took it straight to the Montblanc Boutique in Fashion Square.
I walked in and told the lady I had two questions. The second question was entirely reliant on the reply I got to the first question. Question #1: Is this rollerball pen a genuine Montblanc? Question #2: Do you have any blue refills?
The lady, McKenzie, was friendly, pleasant and knew her stuff. She examined the pen with a loop and pronounced it genuine. She knew that it was from the "Bordeaux Collection" that hadn't been offered in a number of years. She was able to tell me the approximate age of the pen by examining the hallmarks (it was marked as "W Germany" as opposed to today's "Germany"). Finally, she told me I made a good deal.
The Montblanc Boutique had blue rollerball refills in stock. For McKenzie's expertise, I was more than happy to spend the extra couple of bucks more than I would have paid for the same refill at a discount office supply store. McKenzie, thank you.