Lot of 8 NATIONAL ELECTRONIC NL-840 NIXIE TUBES. All have been tested an are in perfect working order. Perfectly clear glass, no blemishes or darkening. Please feel free to message me with any questions. The item "Lot of 8 NATIONAL ELECTRONIC NL-840 NIXIE TUBES CLOCK DIY" is in sale since Tuesday, October 12, 2021.This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "andrekutsic_0" and is located in Akron, Ohio. This item can be shipped to United States.