This splendid Buttonwood (Conocarpus erectus) is from the ABS Stolen Bonsai Registry. It’s an unfortunate fact that there are confused people with bad intentions (often arising from bad addictions) that sometimes steal bonsai.
ABS (American Bonsai Society) recommends that you keep an up-to-date file, with photos, of your bonsai. Not a bad idea. It’s also not a bad idea to periodically check the ABS registry to see if you’ve come across any stolen trees. Anything we can do to help each other and make it a little more difficult for people who steal, is a good thing.