Sale of second-hand design furniture. Where?

I would like to sell an easy chair by Gijs Papavoine and am thinking the easiest will be to sell it to a second-hand dealer, but I have no experience with it here in CH. Have anyone here any experience/tips they can share on this subject? Maybe even a recommendation to a place in the Zürich region, which may offer me a fair price?

Thanks in advance!

P.S.:Mods, I hope I have posted this in the right category, else feel free to move it.

Perhaps you could try contacting the Gijs Papavoine Design website and asking them?

https://www.gijspapavoine.com/