Antiques Roadshow Radio and “The changing sound of radio”

Many thanks to SWLing Post contributor, Pete Madtone, who writes: [L]ast night while I was having my dinner, a lovely Marconi crystal set came on Antiques Roadshow that a chap had rescued from a skip! In the end it was valued for 1000-1500. A sort of radio you'd love in a museum cabinet at home. [...]