VINTAGE 1970'S SET OF 10 NL-5441-A MADE IN USA NUMERICAL NIXIE TUBES 

1 OF THE TUBES IS A + SIGN, ALL MATCHING DATES

DON'T FIND STUFF LIKE THIS ANYMORE.

THIS WOULD MAKE FOR AN AWESOME PROJECT, YOUR VERY OWN MACHINE, STEINS GATE CLOCK, COUNTER, A MILLION POSSIBILITIES