BhM3506 83.30gr. The large format diamond jubilee medal struck in silver. In its original case. Superbly toned in swatches of electric blue, magenta and deep purple highlights. A flawless example. IMO at least an MS66. Two hundred and twelve large silver medals have been graded by NGC with ten being the  highest graded at MS66. One of these MS66 examples sold at a Heritage auction in June 2023 for $3360.  Bought from B.M.Weeks July 1984. FDC