This is a Genco single player woodrail game made in January of 1951. There isn't much info regarding the game at this time so I don't know who the designers are or the number of games produced.
The backglass is nice and the cabinet and playfield look nice for such an old game. I got this game for $400 from Jim Swenson on April 30th of 2011.
I'll add more pictures when I get the game set up for restoration.
(click any picture to enlarge)
Tri-Score Schematic (this is a "decent" schematic that was created by merging two scans from a not-so-good schematic)