The backglass carries Gottlieb's famous phrase: Amusement Pinballs, as American as Baseball and Hot Dogs! Early Production backglasses have the name 'POOL" spelled with two striped billiard balls. This idea may have been restricted to Sample games as most backglasses show the double letters "OO". The point values for the slingshots in the lower playfield appeared on the metal slingshot bar and not on the playfield itself, such as the game in the manufacturer's flyer. During production, these point values were moved to the playfield in front of the slingshots. One game pictured in this listing has the point values on both the metal bars and the playfield. Two Sample games have been identified with the playfield Gottlieb logo having the word PRODUCT misspelled as PPODUCT. We don't know when during production that this error was caught and corrected but it may have been restricted to Sample games. We previously showed a date for this game of May 1958. The new date is per Gottlieb documentation.