Hi Steve,
That picture is very much a ‘prototype’ as it shows what looks like an RD but with an RC engine unit…??
Anyway, I have one of the original RD double sided A4 brochures….and a few copies.
Send me your address to dick(at)hodge1(dot)co(ditto)uk and I can send one to you.
Gotta have that shed wall pretty!!
Cheers
Dick Hodge