There doesn’t seem to be much of a market in “vintage” recumbents, unless it’s something from the 1930s. Plus the Trice you show has clearly been much modified over the years... eg it looks like it has a Nuvinci hub gear. Probably of interest to someone wanting to dip a toe in the recumbent world who doesn’t want to spend a lot of money, but I don’t think there will likely be a market for collectors. An exception might be for the later (but pre ICE) handbuilt trikes with fancy lugwork and expensive tubing. I’d happily put down good money for, say, a Trice Micro...