Ehhhm...
Oh I'm sorry, my fault...
"No trinangle: pilot lot" Is right
"(rare tube)" - is wrong.
Sorry, mixed it up with another tube sort.
Dieter
----- Original Message -----
From: "kay486" <[email protected]>
To: "neonixie-l" <[email protected]>
Sent: Wednesday, February 15, 2012 10:45 PM
Subject: [neonixie-l] Re: two versions of Z566M ?
Whoah, thats really interesting! I have about 20 tubes with no
triangle, 5 with triangle but with no number in it and 2 that have
another number instead of the triangle! Guess im lucky? Here is a
picture: http://farm8.staticflickr.com/7043/6883047229_891b1d8cbe_b.jpg
On Feb 15, 8:44 pm, "Dieter Waechter" <[email protected]> wrote:
The triangle is a very very important sign for Nixie tube collectors.
in short:
No trinangle: pilot lot (rare tube)
"1" in triangle: quality category 1 (best quality)
"2" in triangle: quality category 2 (low quality)
"=" in triangle: bad tolerances (only for no-name products ect.)
"S" in triangle: special release
There are some more interesting signs - I will explain later in a special
article in cooperation with Jens.
Dieter
----- Original Message -----
From: "kay486" <[email protected]>
To: "neonixie-l" <[email protected]>
Sent: Wednesday, February 15, 2012 7:28 PM
Subject: [neonixie-l] Re: two versions of Z566M ?
btw, do you know why some of the Z566M tubes has the yellow triangle
with round corners stamped at back? Does it mean something or its just
sign of earlier/later series?
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