The ECC83 Gallery     12AX7  E83CC  7025  ECC803S

5751  CV4004  CV492  B339

 The quality of Philips ECC83 (developed in 1954) has always been very good. Even the standard types made in Heerlen (shown in the first two pictures on the left side and labelled Amperex, Valvo, Philips a.s.o.) sound nice. But the real cool tubes are the long plate types from the plant in Hamburg.

  Anyway I have to mention that all Philips long plate ECC83 are much rarer than any Telefunken ECC83....

  Notes:

- Many "Amperex" labelled tubes have date codes as "6003" = 3rd week of 1960

  and "Made in Holland" printing = Heerlen <= I65 Δ0A3

- Large plate (17mm) ECC83 tubes from Philips production have "mC" codes

  instead of "I6".

1959 - 1962

1954 - 1955/6

Code:   I61 Δ9X in 1959

          I63 Δ0XX or Δ1XX

          I65 Δ2XX in 1962

Identified by:

- large ring getter

Comment:

Early version of I65 type.

Code: mCN ΔD

Identified by:

- D-getter with flat

  cross bar

- welded plates

Comment:

First  type, ultra rare.

1963 - 1969

1956 - 1958

Codes:   I65 Δ3XX 1963

    until  I65 Δ9XX 1969

Identified by:

- smaller ring getter

Comment:

Most common type - good standard quality.

Code: mCA/B Δ+ - Δ8

Identified by:

- 30° declined D-getter

- welded plates

Comment:

Very early type, ultra rare.

1970 - 1972

1957 - 195?

Code: I66  ΔXXX

Identified by:

- closed disc getter with 8 points

Comment:

Quite rare. Great (close) tolerances.

Code: mC? Δ7X - ???

Identified by:

- 30° declined D-getter

  with flat cross bar

- stapled plates

Comment:

Rare. Found with mC2 code.

1959 - 1960

1959

Code: I60 DXX

Identified by:

- 45° declined ring getter

Comment:

Quite rare - great sound - late 50s and 1960 prod.

Code: mC6 Δ9X

Identified by:

- straight D-getter with flat

  cross bar

- stapled plates

Comment:

Most common type, rare.

Code: I61 B9X/B0X - B1/2XX

     or  I63 B3XX - B9XX

Identified by:

- ring getter

Comment:

Quite rare.

Code: mC1 mC2 mCP DXX

Identified by:

- 45° declined ring getter

Comment:

Very rare.

Code: EOX ≠XX

Identified by:

- ring getter

- triple mica

Comment:

Rare - by Siemens & Halske.

Code: mC1 D6X

Identified by:

- folded square getter

Comment:

Ultra rare from mid 50s production.

Code: EO1 ≠XX

Identified by:

- ring getter

- single getter support

Comment:

Rare - by Siemens & Halske.

Code: mC1 D6X

Identified by:

- 30° declined D-getter

  with flat cross bar

Comment:

Very rare.

Code: I65 r3G2

Identified by:

- ring getter

- similar to Heerlen I65 tube

Comment:

Electrohome label.

Code: mC1 F8C2

Identified by:

- ring getter

Comment:

Very rare.

Code: I60 Z97

Identified by:

- ring getter

- similar to Heerlen I65 tube

Comment:

Thanks to Enrico in Italy

Code: rare !!!

Identified by:

- ring getter

- flat plates

Comment:

Common in the 80s.