[Closed] Looking to trade (or sell?) 1920 D/D 5c Buffalo FS-502 (one of 3 known examples)

Hi, I am looking to pass this trully unique coin to a new good home. I am keen on trading it for the one of mainstream Buffalo variety or one of key or semi key dates from Buffalo series, PCGS graded coins only considered. I have tons of positive references on several facebook groups which is easy to verify, actually quite sure thaty many of these are here also. I dont have price/value in mind, sorry there is no way to find comps. One sale was made for one of these 3 existing examples but I dont trust that one sale makes it a comp. Dates I am looking to get are 17S, 18S, 19S, 21S, when it comes to varieties I am mostly interested in 36 D 3 1/2L or 18/7. I am looking to work with potential buyer with lost of common sense and I don't look to break the bank, if Your coin 'clicks' for me we can have a deal. Please reach out here by comment or by private message.