I have an 1897 coin in my possession that marks Queensland’s Celebration of the 60th year of Queen Victoria’s reign, being her Diamond Jubilee. One side shows the Brisbane International Exhibition Building [see photo], the other side is of two heads of Queen Victoria, the young and the old. Her 60th year reign was 1837–1897. The significance of the old Museum building on the coin could have been when the Queensland Government took over control of the building and grounds when the National Association was forced into liquidation by the economic depression in 1897.
MY MEDAL HAS EXHIBITION ONE SIDE AND ONLY I QUEENS HEAD ON REVERSE , AND MINTED AT EXHIBITION 1897
I just recently found one the same as yours in with some old coins, it has the old Museum building, International Exhibition Brisbane 1897 and on the Queens head side, Struck at the Exhibition Mint. I can not find any other on the internet.
10,000 minted by Stokes & Son noted in book Australian Historical Medals 1788- 1988 by Leslie J Carlisle – Queenslands Celebrations/Brisbane 1897 #1897/29