FIVE (5) National Electronics USA Model NL-848 Nixie Clock Vacuum Tubes Exc
FIVE (5) NIXIE NL-848 Vacuum Tubes. Model # : NL-848 (Nixie Numerical Clock / Calibration Display Vacuum Tube). Date codes of Production : all from early 1970 as seen on tubes in blue ink. 2x"70 04", 1x"70 10", 1x"70 11", 1x"70 13". For security we mark each tube with invisible ink to identify this tube lot.
The NL-848 is a numeric nixie tube manufactured by National Electronics.