looks like a TS brown top knock off... yet the figures are wrong... likely fun but nothing special... there is still good parts support for this as the style of figures and wearing parts were quite common... I don't think you should invest anything beyond a few bucks.
Fix it, play it for a bit, sell for $50. The figures will constantly break... It could be a early model missing decals, this could be valueable to someone, but something says to me no it's just a knock off. Either way, it has little value beyond your entertainment.