Mark Harriss wrote:

François Yves Le Gal wrote:

Poland had a number of manufacturers, such as Lamina, Polam (and
subsidiaries), Telam and ZPP.

Telam is still active AFAICT, even if a number of Unitra/Telam tubes come
from other sources.

Thanks for the information Francois, I'll follow it up.
The other curious thing about these valves is there is no brand
name on the Polish labelled valves.

Mark Harriss

Poland was the birthplace of Solidarity,
and their workers transformed the country from
a dark communist state to a democracy.
I saw a documentary last night on that.
They are clever, and I have some polish tubes,
6BX6, and EL86, and they work OK.

Patrick Turner.