I am in the UK. I was looking for useful spare parts inside a broken 29
inch Panasonic TV (model TX29-AD1) and I had removed all the electronics
boards and the two speakers.

I then picked up what was left of the TV: the tube and plastic outer
casing.

Phew! It weighted a hell of a lot!

Does anyone know APPROXIMATELY what an actual 29 inch CRT picture tube
weighs?

In my case it was the old-style screen ratio and ISTR the picture tube
had a Philips sticker on it.