The manufacturer's Tool Room copy of the original playfield drawing (both documents not shown here) is stamped MASTER and was drawn 1/7/59 (the year is obviously a mistake by the draftsman, a common error at the start of a new year), completed 1/13/60 (a '5' was first written then corrected to be a '6' so the draftsman caught his mistake), and a note saying "Changes made (4 lite holes) 1/20/60". Instead of the usual full list of drills and routes, a second note simply says "Routing fix completed" (using the word 'fix' instead of 'jigs'). Both notes are signed "Jack" and then next to them is the usual name "S Ahlborn" (Steve Ahlborn).