Found a thread on the web where a guy in the States was selling some of his old duplicates. Here is the bit regarding Gunsmoke.
(14) 1976 Kasco Gunsmoke (EM arcade) -- Single player EM gun game.Rare machine that features a hologram cowboy. Gameplay is similar toMidway Top Gun of same era. Formica cabinet that is in near perfectcondition. Overall game is in fantastic original condition. $1200.
All games are located in Malvern, PA USA (near Philadelphia).
https://groups.google.com/forum/?fromgroups=#!topic/rec.games.pinball/PJS3Vbc71s4
