The ECC83 Gallery
12AX7 E83CC
7025 ECC803S |
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5751 CV4004
CV492 B339 |
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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".
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Short plate Types
(15mm) |
Long plate Types (17mm) |
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Heerlen, NL |
1959 - 1962 |
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Heerlen, NL |
1954 - 1955/6 |
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Code:
I61
Δ9X in 1959
I63
Δ0XX or Δ1XX
I65 Δ2XX in 1962
Identified by:
- large ring getter
Comment:
Early version of I65
type. |
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Code:
mCN ΔD
Identified by:
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D-getter with flat
cross bar
- welded plates
Comment:
First type,
ultra rare. |
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Heerlen, NL |
1963 - 1969 |
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Heerlen, NL |
1956 - 1958 |
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Codes:
I65
Δ3XX 1963
until
I65
Δ9XX 1969
Identified by:
- smaller ring getter
Comment:
Most common type - good standard quality.
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Code:
mCA/B Δ+ - Δ8
Identified by:
-
30° declined D-getter
- welded plates
Comment:
Very early type,
ultra rare. |
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Heerlen, NL |
1970 - 1972 |
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Heerlen, NL |
1957 - 195? |
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Code:
I66
ΔXXX
Identified by:
-
closed disc getter with 8 points
Comment:
Quite rare. Great (close) tolerances. |
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Code:
mC?
Δ7X - ???
Identified by:
- 30° declined D-getter
with flat cross bar
- stapled plates
Comment:
Rare. Found
with mC2 code. |
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Hamburg, Germany |
1959 - 1960 |
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Heerlen, NL |
1959 |
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Code:
I60 DXX
Identified by:
-
45° declined ring getter
Comment:
Quite rare -
great sound - late 50s and 1960 prod. |
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Code:
mC6 Δ9X
Identified by:
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straight D-getter with flat
cross bar
- stapled plates
Comment:
Most common type,
rare. |
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Blackburn, U.K. |
1959 - 1969 |
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Hamburg, Germany |
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Code: I61 B9X/B0X
- B1/2XX
or
I63 B3XX - B9XX
Identified by:
- ring getter
Comment:
Quite rare. |
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Code:
mC1 mC2 mCP DXX
Identified by:
-
45° declined ring getter
Comment:
Very rare. |
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Munich (S&H) |
E83CC |
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Hamburg, Germany |
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Code:
EOX ≠XX
Identified by:
- ring getter
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triple mica
Comment:
Rare - by
Siemens & Halske. |
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Code:
mC1 D6X
Identified by:
-
folded square getter
Comment:
Ultra rare from mid 50s production. |
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Munich (S&H) |
E83CC |
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Hamburg, Germany |
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Code:
EO1 ≠XX
Identified by:
- ring getter
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single getter support
Comment:
Rare - by
Siemens & Halske. |
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Code:
mC1 D6X
Identified by:
- 30° declined D-getter
with flat cross bar
Comment:
Very rare. |
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Canada |
12AX7 |
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Suresnes, France |
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Code:
I65 r3G2
Identified by:
- ring getter
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similar to Heerlen I65 tube
Comment:
Electrohome label. |
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Code:
mC1 F8C2
Identified by:
- ring getter
Comment:
Very rare. |
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Italy (Monza) |
12AX7 |
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Code:
I60 Z97
Identified by:
- ring getter
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similar to Heerlen I65 tube
Comment:
Thanks to Enrico in Italy |
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Tubes with CV492
or B339 label |
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Foreign made |
EI Yugoslavia ??? |
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Code:
rare !!!
Identified by:
- ring getter
- flat plates
Comment:
Common in the
80s. |
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