Berry started selling them in the 1920s. Earlier models contained asbestos but that wasn't recognised as a problem back then. I would have been more concerned about the unearthed chassis and the twin double cotton covered flex. Fortunately, some things have improved since then.
Don't shoot me, I'm only the piano player. I DON'T work for or on behalf of EON.Next, but am willing to try and help if I can. Not on mains gas, mobile network or mains drainage. House heated almost entirely by baby dragons.