anyone know about a groove tubes 5sm condenser

I'm trying to find some info on a groove tubes 5sm condenser mic I'm picking up a lot of mics from a guy who closed down his studio and this mic is in the

m-madstar 125154, 1949, kitten from hell 102895, 1950, มุก moowhan-kanchanok 125154, 2026, chompoonut3443 101052

gold888com m-madstar 125154, 1949, kitten from hell 102895, 1950, มุก moowhan-kanchanok 125154, 2026, chompoonut3443 101052

ยักษ์8888 m-madstar 125154, 1949, kitten from hell 102895, 1950, มุก moowhan-kanchanok 125154, 2026, chompoonut3443 101052