Postwar Bolo started from 430K, ended around 730K, about 300K made. Prewar Bolo was scattered, but all with 4 rifling lines under 100K serial, fewer of those existed today than conehammers, production volume was probably lower than 10,000.
Relatively fewer people collect C96s here in the US too. Historically, US was not a big C96 country. According to Stoeger's estimation in 1930s, only a few thousand fixed magazine-well C96s were there (that implies many C96s were imported after WWII). Most American learned there was such a gun from 1970's movie "Star War". However, the supply volume of nice C96s is not big, so the supply and demand is still balanced.
I sold more than 30 of these in the past (including a few Bolos). I mean, collector grade C96s, not counting those poor ones that I collected in my early C&R years. Never had a problem. And never had any return back request to me. .... Weirdly, I've not seen any of those re-appear on market later.. at least, not yet. They simply varnished into black hole. If they do appear, there are a few that I'd like to buy back
If you cannot find a market in Italy, you may want to consign them to Julia Auction in the US.. Sturgess did that. He had quite a few nice C96, both common and rare variations... the price... I don't know, I could not afford his rare ones. I can afford his common ones, but I don't need those common ones. So, I only bought one from his collection -- a Taku Large Ring, cost me $1500. Matching working gun, relatively scarce, so I am still happy. However, all those rare ones sold, those 20-shots, engraved ones, carbines, 6-shots, cased conehammers, etc, all sold. Obviously, there is a market of it in the US. So, export them to the US for selling.