The final event for the year long celebration of the 175th Anniversary of the Society took place on Monday 14th October 2019 at the Water Door, the Davey Street entrance of the Tasmanian Museum and Art Gallery.
A commemorative plaque was commissioned and installed. It was unveiled on Monday by Her Excellency Professor the Honourable Kate Warner AC, Governor of Tasmania. Also conducting the ceremony were the President of the Royal Society of Tasmania, Professor Ross Large AO and Director of the Tasmanian Museum and Art Gallery, Janet Carding.