This peculiar machine, robustly constructed in a heavy cast-aluminium case, is quite rare. Perhaps this is unsurprising in view of its eccentricity. The game play described on the instructions seems calculated to confuse all but the most attentive player. No doubt this was in part a consequence of designing around gaming restrictions. Mounting the play handle on the left was probably more accident of design than misconceived attempt to appeal to left-handed players.