The 2-player EM version of this game is Gottlieb's 1979 'Space Walk'. Compare the backglass to that of Gottlieb's 1971 'Astro'. Pictured in this listing are Sample playfields having serial numbers 01007 and 01022 each having a black stripe in the shooter lane that extends onto the playfield along the upper arch. On these playfields, there are no areas of unpainted wood. For instance, the shooter lane is fully painted, as are the oval areas around each rollover, the flipper area, and under the light shields. The playfield is pressboard or fiberboard, not plywood. There is no model number information under the upper ball arch as could be expected. The bottom of the playfield has an inspector's stamp. We do not know how many playfields were made in this way but likely were just for some or all of the Sample games. We previously showed a date for this game of May 1979 and a production run quantity of 9,899 units. The new date and quantity are per Gottlieb documentation.