Historical information

The 1888 Centennial International Exhibition, celebrating a century of Australian settlement, surpassed even the grand scale of the1880 Melbourne International Exhibition. It attracted over two million people, but the Victorian government had to spend £250 000 on it, ten times the amount estimated. The exhibition had a distinctively imperial focus, and a greater emphasis on culture than in 1880, particularly on music and painting (1).
(1. https://collections.museumsvictoria.com.au/items/273830)
S.D. Gadd was appointed Curator of Parks and Gardens in 1874 an lived in residence in Rosalind Park. He resigned in 1905 and moved to Melbourne where he died in 1917. Mr Gadd was a prominent member of the Masonic Lodge. It is not clear why he was awarded this medal.

Physical description

The bronze medal of the Centennial International Exhibition awarded to S.G. Gadd.
Obverse - Portrait: bust of Queen Victoria in left profile wearing a crown, veil and 3 medals.
Reverse - Field: Victor's wreath consisting of leaves and acorns of British oak and the leaves and acorns of the wattle. The oak and wattle were tied together 'by a true-lover's knot, 'symbolizing the unity and affection between the mother country and the colony'. Southern Cross inside surrounded by a legend. (https://collections.museumsvictoria.com.au/items/273822)

Inscriptions & markings

Obverse - Motto: Centennial International Exhibition Melbourne
Reverse - Legend: (Latin) Artibus Dignis Honor Insignis (To the deserving arts, distinguished honor) (Mint) left: Melbourne Mint. (Date) Lower Centre: MDCCCLXXXVIII. (Engraver) Right: Stokes & Martin S.C.
Edge - Plain, impressed with S.G. Gadd ESQ.