Y61 GEC 6U5G Y63 6H5 Osram Tuning indicators “Magic eye” MINT NOS boxed

Description

Introducing two common tuning indicators of the 1930s.

The Y61 branded GEC  has a round screen having the central electrode looking like a black dot. Introduced in 1939.

The Y63 made by Osram was introduced two years earlier in 1937 and follows the same procedure.

All four valves mint and in working 9rder.