Naval Long Service and Good Conduct Medal (1848) the second version of the medal with its narrower suspender that was introduced in 1874, the ribbon dimensions were changed to 32 millimetres wide and Navy blue, with 6½ millimetres wide white edges. The first version of the medal has the effigy of Queen Victoria on the obverse and was designed by William Wyon, the chief engraver at the Royal Mint from 1828 until his death. The reverse has the image of HMS "Victory" that would remain virtually unchanged through all subsequent versions of the medal. The details of the recipient were either engraved or, after 1877, impressed around the
Queen Victoria Diamond Jubilee Medal stripes towards each edge. Holders of the 1887 medal who qualified were awarded a bar inscribed '1897' and surmounted by a crown, to be attached to the ribbon of the existing medal. The medal for mayors and provosts is a lozenge, , bearing a trefoil pattern, with a circular centre that depicts the portrait of the older Queen on the obverse, with the young Queen on the reverse. The ribbon follows that of the standard medal, with the colours reversed. Queen Victoria Diamond Jubilee Medal The Diamond Jubilee Medal was instituted in 1897 by Royal Warrant as a British decoration.