Sony's first cartridge and a moving coil design, no less.
Well... not really - the VC-8E represents the first but only time Sony ever (partly) rebadged something from somebody else : the VC-8E originated from Satin !
(see the JP link below for the details)
Made to complement Sony's PUA-237 or PUA-286 tonearms, the VC-8E had three major features : very high compliance, very high 4mV output and stylus replacement.
Stylus replacement is performed with no tools whatsoever, just like with an MM cartridge - impressive, isn't it ?
Sony later on launched a sister company, Sound Tec, to develop its own cartridges until phono cartridges faded into oblivion (for Sony) circa 1985, after having launched a series of fairly successful mid-end MC cartridges with... guess what... user-replaceable stylus :)
A thorough comparison of contemporary Satin and Sony cartridges here.