I just got this response to an ad that I inquired about on Agon.
I was asking the seller (Sam1104) what he had that he thought would work nicely with my SWL.
QUOTE
Hi Tom,
I got one Mullard Blackburn plant made 5AR4/GZ34 tube
at $120 shipped. The etched code is f32/B4G1. It might
be D getter though the flash is so perfect that I
couldn't see the getter inside easily. The print on
the glass is faint though. It scored 62/62 (40=65% or
61=100%)---100% matched sections. I also have TS black
plates D getter 5687 NIB/NOS tubes at $150/pair. Let
me know if you decide to but any of them.
Thanks
Sam
QUOTE

Is anybody familiar with these tubes or seller?
I am new to tubes, hence, in the dark with some of the language... D getter, plates, etc.
Do these prices sound like they are in the ballpark?