Not one that I've seen before (FWTW), but it looks in too good a condition to be true. Having said that, if it was a repro, there'd be a flurry of others to follow it, which obviously there isn't. Based on a sample of one opinion (mine), it's an unusual find (if not rare), collectable in some quarters, but possibly with not too much value (as IMHO value is only an important quantity when based on the highest offer received from someone with a keen interest in purchasing said item).
I'd guess at £10 but I'm always prepared to be shot down by higher estimates from (serious) potential buyers.
JMHO, Vic Thompson.