This looks just like a U-2093, including the scalloped ends in the bar, but is significantly larger. It measures 2 3/4" wide, 4 1/8" tall, and the bar is 5 3/8" from end to end.
I obviously picked this up at a show many years ago, as there's a hand-written sticker on the back that says "Merklin Porcelain Works - Czechoslovakia", but no U number. The two Worldwide Porcelain Insulator books and the NIA's online foreign porcelain guide have nothing of similar dimensions. Ideas?