The manufacturer produced the backglasses in both crystal glass and Plexiglas. A special version was produced for Germany with the same project number and project release date. The schematic part number for the US version is W-1042-50a. The German version is W-1042-51a. The earliest ads we found for this game were two from Billboard Oct-5-1968 pages 45 and 53 where one of them indicated, "Now at your Distributor." In Cash Box Oct-12-1968 page 100, Bally announced delivery of this game. A collector in Germany reports buying this game in 1985 having serial number 1035 which is consistent with the fact that Germany received Sample games from Bally during the late 60s. He no longer has the game but recalls it had a German inspection date of June 1968 (exact day forgotten), meaning that the machine was unboxed by distributor L�wen-Automaten in June, prior to Bally's regular production run Start Date of August.