We have recently imported our household

We have recently imported our household contents from abroad, and have numerous excess items for sale that we cannot use as we have moved from a 800 sqm home to a 300sqm home, includes a wide variety of high end modern crystal glasses, crockery - all new Le Crueset, Le Crueset Pots and pans never used, as well as original oil paintings in superb frames. A range of antique chairs and tables as well as cupboards.Who could we contact to look at moving and selling the items, preferably a company that will collect all and offer a singular fair pricing.We are in the Castel Del Piano - Grosseto region.