I wasn't entirely sure until I saw who uploaded our back image and found the further evidence on COMC.
Some users (including the one that originally uploaded the front image for the Boggs ERR) have uploaded doctored images to create the appearance of a real error card. This has happened with more than one uploader, and more than one time.
However, the uploader of the Boggs back image on TCDB is a reputable member and knowledgeable collector, especially when it comes to ERR/VAR cards, so I know his submission is truly legitimate.
Twice, I have been searching for a card that was on my TCDB want list, only to find out that it didn't really exist - once, it even had the doctored images.
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.