Folk Art Rocking Plinko Type Game with Paper Star Ground

I really love this one, including for the way that the back sides of the game board are arched, such that it can be set flat on a table and rocked to one side or the other to set the steel ball in motion, with scores handwritten at both ends of the board between the nails. The ground is hand cut  construction paper, with one star layered on top of the next, and nails following the outlines of the stars. And then a sheet of glass over top, suspended in the niches of the wood frame.  Humble, graphic, sweet, and fun!

7 3/16" x 5 3/4" x 2 1/16" and in very good condition, works great. I'd guess 1930s-40s or so.