BRIMAR CV4033 - Rare 1957 - Mil Black Plate, 3-MICA Halo GT. - STC Footscray Production Prem. Grade Long Life ECC81:CV4024:12AT7 Factory Tested (Plug&Play Ready to Use) Each lead is straightened and

Each lead is straightened and cleaned to ensure perfect fusion with the base pins in the silver soldering bath

NOTE: After spending $$$$ on tooling and various prototypes

Labels are a bit fragile on these tubes and Codes may be partially rubbed off due to bulk storage

This 12AU7 variant has black plates with a single connected joint

what I mean by that

BRIMAR CV4033 - Rare 1957 - Mil Black Plate, 3-MICA Halo GT. - STC Footscray Production Prem. Grade Long Life ECC81:CV4024:12AT7 Factory Tested (Plug&Play Ready to Use) Each lead is straightened andNOTE: After spending $$$$ on tooling and various prototypes, we have fitted Special Grade Flying Leads tubes with Custom Thermo setting Bases developed in house. It is a multi step, labor intensive process. Each lead is straightened and cleaned to ensure perfect fusion with the base pins in the silver soldering bath. Process is painstakingly slow, so we will be adding a few tubes at a time to the inventory. Tubes are Plug & Play, Ready to Use. Brand