Telefunken VF14M Vacuum Tube - Used, Tested

Telefunken VF14 M Vacuum Tube For Neumann U47/U48 Microphone - Used & Tested A SAD NOTE: I received word tonight (08-16-2022) that Andreas Grosser recently passed suddenly in mid/late July 2022. I'm very grateful for the expert service that he provided to me just prior to his passing with testing and regenerating the VF14M vacuum tube listed here. Speaking on the telephone with Andreas was a pleasure and I could tell that he oozed passion and expertise for his craft. A very talented expert indeed! RIP Andreas. All of the information below is summarized information that I've gathered/learned over the past few months about VF14's in general supplemented by my conversations with Andreas Grosser in Germany who tested and regenerated this particular Telefunken VF14M tube for me in early June, 2022. For sale is a rare original Telefunken VF14M vacuum tube utilized in the historically significant Neumann U47 and U48 microphones. This previously used, original Telefunken VF14M tube has ju