Engraving: Watt's first experiment. Marcus Stone ARA pinxt; Herbert Bourne sculpt; published by Appleton & Co 1879
Commemorative spade used to turn the first sod of the River Lee Conservancy's new cutting through Horse Shoe Point 1878
Filings coherer, small glass tube with bulb at one end and cap of red sealing wax at other end, 1898 1898