Thank you for this. The seller is asking what seems to me a lot of money. Without the map. Just in passing, I looked up cardboard on Wiki and I see it was not invented until 1817. So whatever the porte cartes is made of, it is unlikely to be cardboard. As a Scotsman, proud that Scotsmen invented the television, the MRI scanner and the guillotine to name a few, I was delighted to discover a Scot invented the cardboard box.