That's my calendar
My red blanket in the background lol
It's indeed a misprint and I ordered another one from Amazon about 3 weeks ago, as my photo was making the rounds, which also came with the misprint. It'll probably never be worth anything but I'm keeping it in plastic wrap "just in case."
Apparently the same company -- who doesn't sell to or through the Nats, just pays the licensing fees--- printed the Mets calendar to showcase star pitcher JASON deGrom.
Tee hee... Anyway I think they are still on Amazon if you want to take your chances on getting a misprint. The back cover has a thumbnail of what's inside so you can tell without opening, what you've got.
Search for "nationals calendar Turner" since Turner publishing makes it.