AC/R KL1 Marconi AC/G balloon Ediswan AT15 LS5 Klangfilm KL 71509

Description

Both AC/R and AC/G were released in 1927 as indirectly heated valve for battery sets.

What we show here are a pair of balloon shaped AC/R and AC/G with side connection. They both bear the Marconi sign on glass and made by the Metro-Vick Supplies Ltd.

Other valve of interest is a super rare EDISWAN AT15 LS5 one of the best valve you can find with horizontal plate looks like an early R type design!

The last valve is a rare KLANGFILM KL 71509 with pip top super rare power output triode been tested excellent!