black + cap, fitted with type E grid screen + worn CH-4 case. Condition 4-5/E (seals deteriorated – useable ‘as is’ and can be replaced relatively cheaply). Full working order. c. April – July 1978
black + cap, fitted with type E grid screen + worn CH-4 case. Condition 4-5/E (seals deteriorated – useable ‘as is’ and can be replaced relatively cheaply). Full working order. c. April – July 1978