That was the old B3 Rainbow Riches arcade machine, which paid out your £500 entirely in pound coins and the pot feature had amounts on it rather than just cumulative bronze, silver and gold. Yeah it used to be a good game back then, that was about 10 or 12 years ago, I had loads of jackpots of that, leprechauns going to £500, five wishing wells etc. Also the original Reel King around the same time used to give me loads of 5 scroll for £500 features.