Common Labels |
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Philips |
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Valvo |
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Very versatile name that appears on tubes made in all plants of the Philips
company. Sometimes combined with SQ - special quality printing. |
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The "German" label. Most tubes for the German market had this label and it
appears on tubes made in Hamburg or by Siemens in Munic. Very high quality
on some types.
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Mullard |
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Amperex |
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Brand name reserved to the tubes made in the plant in Blackburn, U.K. The
logo changes (over the years). Famous on EL34s: the "shield logo". |
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Distribution name for the U.S. and Canada after
purchasing the Amperex company in 1955.
Many audio tubes with "Bugle Boy" logo. Most were made in the plant in Heerlen, Netherlands.
Good standard quality. |
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Adzam / Mazda |
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Miniwatt |
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Label found on many tubes for the French
market and tubes made in France or in Belgium (Bruxelles). Of course "Adzam"
is "Mazda" (reversed). |
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This Label was used for tubes made in Holland an in southern Europe. On the
left side the earlier version with "round" Philips lettering. Also found
combined with SQ. |
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Dario |
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Pope |
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This Label appears on tubes made for the southern Europe market and on many
tubes made in "Miniwatt S.A." plants in Italy and Spain (big
factory in Barcelona). |
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In Germany unusual label I found on a tube in
Holland (where they seem to be more popular).
The Brand name comes from a
very old tube inventor and manu-facturer from Venlo. (Pope does not mean "Productieoverschot
Philips Eindhoven" = PPE !!) |
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Brimar |
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The 'BRItish Made American
Range' label was used on earlier STC (British Western Electric) tubes. Than
it seems to be used for Mullard factory tubes. |
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Foreign Labels
Many tubes from Philips were distributed by other tube manuctureurs who gave
them their own logo (as Siemens - left).
And others were plugged in Radio, HiFi or
test equipment where the tubes got logos from those manuctureurs (as The
Fisher - right). |
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Siemens |
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The Fisher |
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Siemens never made any EL34 tubes. And this
tube was not made in Germany. This is a OO-EL34 from Mullard as the
code indicates. |
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"The Fisher 7189" logo on an usual EL84 (kM1
code) from Mullard production in Blackburn. Fisher also labelled Telefunken
EL84s as 7189. |
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