For the tube on the far right, how long does it take for tubes to darken this 
badly?

http://i.ebayimg.com/00/s/ODMwWDEzNjA=/z/~ywAAOSwGvhUKGl2/$_57.JPG


At some point, artisan nixie tubes will be cheaper than some of the largest NOS tubes that rarely show up. Of course, to get a decent service life, either giver pills need to be found or created or there needs to be some other method for adding Hg vapor after the tube is sealed from the vacuum pump.


Numeral height:
Nixie Rex (panaplex) 457.2mm 18"
CD47    135mm   5.31"
F9020AA 133mm   5.24"
GR-311   70mm   2.76"
B-7971   63.5mm 2.5"
GR10N    59.7mm 2.35"
CD27     54mm   2.13"
NEO-5000 (panaplex) 50mm 1.97"
Z568M    50mm   1.97"
IN-18    40mm   1.58"
NL8091   35mm   1.38"


On 09/29/2014 06:27 AM, Nick wrote:
Not my auction - they are rare tubes though... http://www.ebay.com/itm/221561797737 
<http://www.ebay.com/itm/221561797737%C2%A0>

Nick


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