NEW NIXIE TUBES for clock NOS lot of two tubes IN-16 New Nixie Tubes IN-16, for nixie clock. Best quality, these Tubes was made by military plant in Ukraine (former USSR). The same date code! “OTK” marking, indicates premium military grade tubes! SPECIFICATIONS: Tube diameter, mm 13 Tube Height, mm 45, approx including glass nipple Digit Height, mm 13 Brightness >150cd/m^2 Angle of visibility >90 deg Power supply voltage >190 V Discharge appearance voltage <170 V Discharge voltage 7500 hours Shipment =========Sending parcels with a track number worldwide by airmailEstimate delivery time is 10-40 working days.