EL37
Mullard branded Fisher
Used
0318-2012

EL34 Telefunken---one slot

EL34
Telefunken  one slot
Used
0229-2012

ref: http://www.tube-classics.de

1960-1966
Telefunken EL34

Identified by:

- 5 stapled plate
- only one slot in plate

Comment:
Nice tube. Very rare.

EL34 Mullard Xf1

EL34
Mullard xf1 B0H2
Used
0221-2012

ref: http://www.tube-classics.de

1958-1961
Mullard EL34 Xf1

Code: xf1 BXX

Identified by:
- double ring getter
- base larger than glass

Comment:
Rare. There are 7 different large bases. Some without hole in guiding pin!

Photo:
Mullard EL34 6CA7 with large big base Blackburn xf1 code double ring getter

EL34 Telefunken wing

EL34
Telefunken wing
NOS
0221-2012

 ref:  http://www.tube-classics.de

1967-1971
Telefunken EL34

Identified by:
- heat sinks "wing" on plate sides
- double ring getter

Comment:
Great tube. Rare.

Photo:
Telefunken EL34 bakkelite base double ring getter
- stapled plate
- heat sinks plate wings
made in Germany in Ulm or Berlin 6CA7    

1967-1971

EL34 Philips DD getter

EL34
Philips Holland xf5 L2A
Used
0227-2012

ref:  http://www.tube-classics.de

Sittard, NL   

1957-1962
Code: xf4/5 L7X - LXX

Identified by:
- DD getter
- brown bakkelite base

Comment:
Quite rare - great sound. Maybe my favorite one!!

Photo: 
Philips Valvo EL34 6CA7 with brown bakkelite base Sittard DD-Getter D-D xf4 xf5 code    

EL34 Mullard Xf1

EL34
Mullard xf1 B0J3
Used
0227-2012