I share your pain with TBs - I released something on the order of a dozen years ago and they all either go missing, or people seem to hold onto the permanently. Nothing that Groundspeak or the law-abiding cachers can do, and it ruins the game. You just don't see TBs nowadays, and it's a shame.
Anyhow, rant over 😉 😁 I am heading home to Derbyshire in about a month's time, and will take the little tank up to there. I actually could do with checking on one of my own caches which is located near to a collection of military vehicles - will do my best to get some pictures if they are still there.