As we hit 100k I am considering selling this piece of Citadel21 #682 to support some of my favorite FOSS projects/ppl like nostr:npub17tyke9lkgxd98ruyeul6wt3pj3s9uxzgp9hxu5tsenjmweue6sqq4y3mgl gang (bit of bias here not gonna lie) or Cashu

How would i do this (auction?) and what would it fetch?

Any ideas?