R Type Philips IDEEZET Helikon Populair radio receiving and transmitting valves metal base top pip

Description

Some early R type valves of the 1920s for sale this section.

All valves have metal base with top pip.

Helikon Populair top pip brass base horizontal anode.

Philips IDEEZET (the Hague) top pip brass base horizontal anode.

Frelat top pip brass base horizontal plate.

R Dutch made silver base top pip vertical anode.

Radio Micro metal base top pip.

Frelat metal base top pip vertical anode.

All valves tested with good filament.