I bought several different discs of Fish's 'A gentleman's excuse me'. Besides two 7" singles, a cd-single and a shaped picture disc, the 12" single was a piece of vinyl that ended up in my collection pretty soon after its release.
On this format, the demo version of the song is added. It also appears on the cd-single, but this is, as far as I know, the only vinyl format on which the demo appears.
My collection: 12" single no. 93
Found: Free Record Shop, Den Haag, 1990
Cost: 15 guilders
Tracks: 'A gentleman's excuse me' / 'Whiplash', 'A gentleman's excuse me (demo)'