EF93 / 6BA6W (5749, CV454, 6K4P-EV) Pentode, NOS.
Socket needed Miniature 7 pin (B7G, Pico-7)
Long-life version (W) has internal connection between cathode (pin 7) and grid-3 (pin 2).
Used for example in Hammond M3, Hammond M100 , AIYIMA headphone amps, Stam-Audio STAMCHILD SA-670 studio tube compressor and many others.
