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The 6X5GTY is full wave rectifier for mains powered sets and is probably a 1930s design in a later glass tubular package.

The valve required a 50 Ohm series resistance and could only supply a reservoir capacitor of 8 µF.

See also 6X5G - 6X5GT.

The valve is also marked as a CV574.

The identical anodes are mounted at right angles with one upside down around the common cathode tube.

A closer view.

The wide glass tube envelope is 29 mm in diameter and, excluding the IO base pins, is 69 mm tall.

References: Data-sheet, ¹⁰⁴⁰ & ¹⁰⁴³. Type 6X5GTY was first introduced in 1936. See also 1936 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.