Sorry it took so long. Here's a scan of my CP as well as an image showing measurements. This is an original Joust panel, not a repro. They button holes are all 1-1/4" because the leaf buttons have these little... wings?... under the bezels. I guess to keep em from spinning in place. The joystick slots are 1" x 1/2"
Measurements are from the top edge and the left edge.