Three populated boards out of East German equipment, carrying nineteen WF side-view nixies between them in all three decimal-point variants of the same 13 mm family. Please read the note below before buying, because some of these are not going to light.
Please read before buying. Three of the Z570M tubes have broken evacuation tips. They are marked with red arrows in the photographs. A broken tip means the gas fill has gone, so those three will not light under any circumstances. They are not counted in the price and are included only because they are still soldered to the board.
The rest of the lot is sold untested. These came out of working equipment, but nothing here has been struck on a bench and no digits have been checked. Buy this as an untested lot with three known dead tubes.
Z570M = Z5700M | Z573M = Z5730M | Z574M = Z5740M
In each pair the number with the extra zero is the same display supplied without the red contrast coating. Everything else about them is identical.
Wider cross-references for the family: ZM1080, ZM1082, ZM1134, ZM1135, ZM1136A, ZM1136L, ZM1136R, ZM1138A, ZM1138L, ZM1138R, B570M, TAU7030, F9080B.
The three types in this lot are not three different tubes. They are one 13 mm side-view nixie in three decimal-point variants: the Z570M carries no point at all, the Z573M has one to the right of the digit and the Z574M one to the left. Everything else is shared, down to the 19 by 47.5 mm envelope, the 170 volts needed to strike and 140 to sustain, and the 2 mA of anode current the factory recommended. WF laid a red filter coating over the glass purely for contrast, and the uncoated versions of all three carry an extra zero in the type number. For anyone building a clock the decimal point variants are the awkward part of the shopping list, since a display running hours, minutes and seconds needs points in specific places and sourcing them singly takes far longer than it ought to.
Nineteen nixies and three boards in one go - strip them down and you are most of the way to a clock.
SKU: ozone