On Nov 9, 9:11 pm, David Forbes <[email protected]> wrote: > Haydu 6700 tube and box photos here: > > http://www.nixiebunny.com/haydu6700/index.html
You have a unique variation. I've never seen that sticker before, and the black domed top cap is not normal for the Haydu version. It probably dates to right around 1957 like my MO-10, and it has the same included connection diagram. The next variation (1958-1959ish) has a red Burroughs label, black top cap and clear bottom cap, and is packaged in a red and black Burroughs box. Eventually they switched to a black bottom cap, presumably because they finally ran out of the leftover clear bottoms from the initial production run. There was also more than one variation of the red Burroughs label used during this period. Sometime around 1960, they eliminated the red plastic label and started using the black/orange/grey style boxes. Serial numbers were also abandoned at this point. Micah Mabelitini http://www.decadecounter.com/ -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
