ORANGE JUICE : Live at Glasgow College of Technology - 17th April 1980 (Cassette recording).
I found this spiritedly shambolic live recording tucked away on an obscure Soundcloud account a few days ago - as far as I'm aware it's the earliest known documentation of an Orange Juice performance, dating from April 1980 (& thereby placing it between their trailblazing "Blueboy" & "Simply Thrilled Honey" singles). I've no idea who recorded it, who uploaded it, whether it contains the entire show or not, or whether an official release is being penciled in, so I suggest you grab it & enjoy it while it's still available.
Incidentally, Edwyn Collins' AED label are currently giving away a limited edition cassette of a 1981 show with all purchases placed c/o their website until the end of December, meaning that now's as good a time as any to pick up a copy of his current Understated l.p. if you don't already have one.
n.b. Vintage Postcard Records promotional poster designed by the prodigiously talented Robbie Kelly. You can find lots more choice ephemera of this nature at the excellent Sound of Young Scotland blog (credit where credit's due, etc).
● Sorry to moan but it's what I do best