This is the Victor Laboratory (JVC) JL-B1000P broadcast turntable, the world first quartz lock turntable introduced in 1974 by Victor company of Japan (JVC). This Victor Laboratory model was followed by the Victor (JVC) TT-101 for domestic use in 1975.
From a vintage JVC advert promoting a new JVC Quartz turntable:
"Since we introduced the world's first Quartz-controlled turntable in 1974, we've been constantly refining the ultra-precision oscillator circuits and improving the characteristics of our motor drive system."
Find out more about vintage audio turntable visiting the "phono" section of