The EF86 Gallery     6CF8  6BK8 

  The EF86 is similar to its precursor, the EF40, but has a noval socket (instead of the rimlock socket).

  The EF86 type was introduced in 1955 as low hum and low noise type.

Code: 8Y1 DXX Hamburg

Identified by:

- square (D) getter

- grey plate behind mesh

Comment:

Rare - early production.

Code: 8Y1 D9X in 1959

          8Y2 D0/1/2X later

Identified by:

- ring getter

- grey plate behind mesh

Comment:

Rare.

Code: 8Y2 DXXX

Identified by:

- ring getter

- silver plate behind mesh

Comment:

Quite rare.

Code: 8Y5 LXXX, Brussels

Identified by:

- ring getter

- grey plate behind mesh

Comment:

Common type. Also found with X9G, ±0l1 and 8Y4 FlB2 code.

Code: 8YX BXX, Blackburn

Identified by:

- square-getter with cross arm

- large plate

Comment:

Rare - very early prdouction.

Code: 9r1 B9X, Blackburn

Identified by:

- square-getter with cross arm

- large plate

Comment:

Rare - very early prdouction.

Code: 8Y1 B5XX, Blackburn

Identified by:

- ring getter

- silver plate (as in Tfk types)

Comment:

Seems to be very rare.