A Stuart Devlin sterling silver 'Silver Jubilee' letter opener, 1977 London, with maker's mark Sd, special Jubilee punch, Royal mint issue, the slender tapering opener with a gilt coin finial stamped with a profile of Queen Elizabeth II on the occasion her silver jubilee with the Royal coat of arms verso, hallmarked to blade, housed in the original presentation box, total weight 67gr, length 17.5 cm