Royal Mail (UK) produced a special and limited edition book for Halloween in 1997 featuring the stamps of Great Britain, USA and Canada. Also included were board games, masks and other surprises including a large poster (approx 17"x22"). This is not listed anywhere in Unitrade, Canada.  A pristine, but unwrapped (don't know if it was in plastic) piece.  What great fun for kids!  This is a very heavy item and will require extra postage!