Picked the colouring book up on eBay for £15 (eek!) last year. My Dad worked for SMT in Carlisle many years ago and we got a few of these but we obviously coloured them in and lost them! Wish I kept loads now!
And a Vauxhall Nova mug in tasteful yellow - looks properly yellow in real life and has a big fingerprint smudge in the black lettering on the rear so a true one-off!