Seems to be some heavy bidding on this Sinbad
http://www.ebay.com.au/itm/Gottlieb-Sinbad-pinball-machine-/140551837170?pt=AU_CoinOp&hash=item20b98ad5f2
Considering the crazy bad peeling on the backglass??
Backglass looks almost a write off, not sure if this is one you'd easily find a good glass as replacement.
Very fun game, but with the backglass like that it's already at top dollar for this title I reckon given it's never been plugged in (is that to save on knowing about all the magic smoke leaking out?
). Why wouldn't you plug it in and then be able to give an honest appraisal of it's electronic condition?
