NOS NIB RFT WF FUNKWERK. Z5680M = Z568M = B-7091 = NL-7037. Price is for 3 tube. Brand new, NIB, NOS with original box and factory codes.
Produced in Germany in 1971. With brand new socket included as a gift. These were in excellent condition, but I shortened two wires while testing and now I have 3 tubes left with respectfully digit "1". Digit "2" and digit "6". All other 0-9 are okay.
More information for the tube type you can find here: Z5680M. The item "3 x RFT WF NOS Z5680M Z568M B-7037 NL-7037 Nixie Numeric Clock Display Tube" is in sale since Saturday, March 21, 2020. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets".
The seller is "hi-fi-tube" and is located in European Union. This item can be shipped worldwide.