Topic: Determing vintage of my table

[foosbill]

I recently bought a tornado coin op from a bar that closed down and am wondering if anyone can help with figuring out the year it was made...serial # is 202567..the first tax sticker on it was from 2002...it has a 4 coin slot...the cabinet is a dark brown marble/slate look...the tornado logo on the playfield is a red T outlined in blue with a spinning ball in a tornado in the center of the T, and under the red T it says TORNADO TABLE SOCCER also in blue..the scoring posts that hold the little rod and scoring pucks are yellow for the yellow side and black for the black side..this thing has had very little use and is in excellent condition its very solid, only thing im replacing are the bearings and i got it cleaned up like new, i dont know if this is a valley dynamo table or not..ive been told it might be from 1987 or 1988..is there any other things i can look for to determine this or does anyone have any input? thanks for the replies..i bought this thing for 250 bucks..lol