Pete,

You need to clear up one point before we can put a price on what to offer.

In the subject line you mention Fireball Classic but in your post you mention 'knowing nothing about EMs'

So is it Fireball Classic from 1985?

Or the original Fireball from 1972?

Or even Fireball 2 from 1981?

http://www.ipdb.org/search.pl?name=fireball&mfgid=412&pl=4&searchtype=advanced

Tony, I could hear your brain ticking over and feel your excitement from down here but alas, a 1972 Fireball - too good to be true.  I reckon that was my favourite machine at Expo.