From US in the DC suburbs. https://typewriterdatabase.com/typewriters.php?hunter_search=5653&collection_search=My+Collection

We've added most of ours, early days I didn't log the ones we gave away, but we're diligent now! I know at least one of mine moved from my collection to sightings and another collector added it to her collection. That would be fun to see the history of each machine as it moves from one collector to another. Although most of our machines go to people who don't collect.

I personally know two local collectors who haven't added their collections to TWDB, so there's that!