Sony XL-MC1
Sony XL-MC2
Sony XL-MC3
(1981 - 1986)

Probably Sony last MC cartridge development, made through the soon-to-vanish Sound Tec department.

A good way to close the circle : Sony's original MC cartridge was the VC-8E (under Satin license - Sony's only rebadge ever) which already sported the user-replaceable stylus feature.
However, let's be honest, as the image above shows, it is the entire cartridge which is replaceable since it is the body (coils included) which is detachable... Let's call this a middle of the road between a regular MC cartridge and the T4P mount :)

Despite the futuristic look of this nice japanese catalog (and the other many nice japanese ads and catalogs I have around these), the XL-MC series was more budget oriented than the megabuck XL-88D could ever be. However, all models did featur the "Figure 8" coil inaugurated with the XL-55 masterpiece in 1976, the structure of which is outlined here.

Sony produced many XL-MC versions until the mid 1980s, including high-end ones like the rather expensive and excellent XL-MC7 or ultimate XL-MC10 - the higher the better but the MC7 was the best of the series. The XL-MC3 already had a double super-elliptical nude diamond.

Some of those MC cartridges were planned to be mated with the HA-T10 or HA-T50 mini-transformers.