Single examples of the 2-cent Trans-Missippi can be found used illegally as revenues, usually priced in the $100-200 range depending on the document. The example below, with a pair and two singles on a fragment of a promisssory note would have been a superb exhibit-quality item were it complete.
Oh, the items that have been destroyed over the ages… the humanity! (or is it the philately!)?
There’s a seller on eBay that has two separate listings of R126 ($3.50 second issue) each on document fragments that appear to have been cut from the same document. Given that the population of R126 on complete documents is 3 known per Mike Mahler’s census (last updated in January of this year), a document with two examples would have been splendid.