Opal Butterfly / Hawkwind Concert Poster, a Poster for the Opal Butterfly gig at Farnborough Technical College Friday 18th December 1970 - The band had future Hawkwind members Lemmy and Simon King - Support by Sweet Slag - The vendor was a student at Farnborough Tech from 1968 to 1971 and collected this Poster and the others featured in these Poster lots from gigs at the College - rolled, measuring 30" by 20" - small tear bottom edge left but no pinholes or paper loss and generally in good condition