Thanks for your help.
The more I think about this, the more I am convinced that 192-VN35E refers to the shape of the cartridge body and should specifically match the Shure V15 type III, which for me is correct.
The added complexity comes because Jico uses different materials for the cantilever (eg boron, sapphire, ruby), different shapes for the diamond tip (eg conical, elliptical, Shibata and SAS) and different bonding technologies (nude, bonded) to attach the diamond to the cantilever.
The suffix SAS/B means Super Analog Series with a boron cantilever. Super Analog Series is a shape similar to Micro Ridge - could even be the same.
I am convinced that the seller got confused and priced incorrectly. Now to convince him!
Cheers