Polene is a great bag to own & I have 2 Neufs which I'm glad to have purchasedI’m going to be snapping up a few Polène bags when I get to Paris on the 25th. It’s personal collection but I’m also gambling on them becoming more valuable and popular in time. We shall see, I guess?
I bought them because they were functional in my life which is JMO
Not sure they will attain the value that perhaps you are expecting but who knows?
Enjoy your trip to Paris & Polene as well