Sanitary Institute Incorporated 1888 silver Prize Medal. Awarded to Beady & Martin for Vacuum Tubes for Rontgen Rays Newcastle 1896 so early X-ray equipment
silver 51.3×40.5mm
49.12g
Rontgen discovered and described Rontgen Rays in 1896 – they were named X-rays later. He was given the Nobel prize for Physics in 1901.
So this is a really early reference to X-rays
Brady & Martin were Newcastle based chemists and equipment makers founded about 1855 and continuing for over 100 years, They were at 29 Moseley Street.