HW T-shirt mystery

[Christian Mumford]

When I saw Hawkwind in Oslo in 1991, they had two different T-shirts for
sale. One was a Palace Springs white T-Shirt, the other was an old HW &
Screaming Lord Such T-Shirt (black). I bought the latter, and it looks
like a vintage 70s shirt. I've worn it so much (it's my only HW
T-shirt!!) its falling apart at the seams!! Anyway, I was wondering when
it was from... its black, with a yellow/red/blue & green print that
reads: (square print with circular double headed hawk motif)

"Hawkwind" (obviously!)

(picture of Screaming Lord Sutch in middle)

"Screaming Lord Sutch"
"Exeter Plaza Aug 31"
"Monster Party"
"Raving Loony Party"

Pretty cool, Hawkwind's contribution to politics!! I seem to remember
the person who sold me the shirt said it was from '77, but I'm not sure.
Where was this gig and what year???

Christian