Three Pobjoy Mint Isle of Man proof coins or sets

Three Pobjoy Mint Isle of Man proof coins or sets, comprising sterling silver and verinium three one pound coins, verinium one pound coin and '25th Anniversary of the Coronation of Her Majesty Queen Elizabeth II 1953-1978' three crown coins, Isle of Man 175 sterling silver decimal coin set and The Complete set of Isle of Man Crowns, Minted to Commemorate the Twenty-second Olympiad (5)