I love this plain glossy white china 'sign', so classic in style, so versatile! It's made to hang portrait, but would work just as well landscape (maybe in a plate stand or easel). Or use it flat as a tray!
It measures 12 1/2" x 10 1/4" overall, 9" x 6" over the area inside the frame. Condition is excellent, this is a newer piece, never used.
I tested this with a dry erase marker in a dark color, and it wiped off leaving no trace, very easily. The glossy surface on the front is a breeze to clean. DON'T try the markers on the unglazed back, unless you want it to be permanent!