"Radium button" purporting to contain radium bromide
"Radium button" purporting to contain radium bromide, with instructions and holder, by R. and J. Beck, Ltd., English
"Radium button", with instructions and holder.
"Radium button" purporting to contain radium bromide, with instructions and holder, by R. and J. Beck, Ltd., English
Brass canister with lead lining for storage of radium button