Vintage 50 pcs/lot low voltage glow Nixie indicator NEON LIGHT BULB TUBE MN-3 USSR NOS NIB

Old vintage neon light bulbs, nixie indicators MN-3. Made in past Soviet Union (USSR) in 80s years. 50 PCS/LOT in a box. Have some signs of long storage, but still glow and can be used for DIY and antique machinery. MN-3 - low voltage lamp glow (about 40 V). The electrodes are made of pure iron, molybdenum, nickel. Cathodes are covered by a thin film of barium, calcium or cesium combustion to reduce stress. An additional factor is the tablet with ionizing radioactive material attached to the outer electrode. (dont worry its safe and doesnot goes outside of tube) Neon Lamp MN-3 is used as an indicator, signaling elements in a variety of electrical and electronic devices.