Eimer 1313 variety.
28mm. By J. Davis?
Obverse with young head portrait of Queen Victoria, reverse showing Victoria enthroned, attended by Britannia & Justice and flanked by Commerce & Industry.
This medal is recorded in 51mm, 45mm and 35mm but not in this 28mm size. The usual obverse legend reads as this medal but also includes 'In The 19 Year Of Her Age', which is omitted from this example. This may therefore be some type of trial striking of the medal.
Uncirculated with fresh surfaces and very rare.