Pivetta hiking boots

I have a pair of Pivetta hiking boots in ladies size 7. Bought in Aspen in 1977 I believe. They were not worn very much, as I was a day-tripping kind of hiker. I was thinking about selling them perhaps? Wonder if anyone could tell me their current worth? They are incredibly, beautifully made in Italy, grey suede with red laces. At the time (late 70's), I wore a size 7 or Euro 37, and after three babies I now wear a size 8 or 8 1/2. Can't wear these, alas, or I surely would. THey are chic and cool-looking and great for any kind of walking. Thanks for any direction. I guess there is always ebay no? THanks, Maude