I don't know what has happened to it since I saw it and can only go on what I'm told. Maybe it has been looked at and condemned and maybe not. The person concerned wasn't short of a bob or two, nor do they collect anything in depth, so it would fit into a random selection quite easily. Maybe they kept it and wanted to stay below the radar. Maybe they sold it. Who knows?
We all know there are many things that specialist collectors would like to know exist, but the knowledge is kept close to the owner's chest for whatever reason.