Watch List notes:

Commemorative Medals, William, Duke of Clarence (later William IV), Appointed Lord High Admiral, bronze-gilt medal, 1827, by John Henning, bare head right, rev. Britannia stands on the waves, with shield and spear, ships beyond her, HER MARCH IS O'ER THE MOUNTAIN WAVE ..., 65mm. (BHM.1296), extremely fine
The reverse legend from Thomas Campbell's poem, Ye Mariners of England: 'Britannia needs no bulwarks / No towers along the steep; / Her march is o'er the mountain wave, / Her home is on the deep'. (180-220 GBP)