Way back when, I bought a Lyra Clavis as a dealer demo. When I picked up the package, there was something rolling around in the box. I called the dealer and rolled the box so he could hear what I was before it was opened. The stylus gaurd had come loose in shipping and removed the cantilever from the cartridge. The dealer provided another cartridge to me at no cost. BTW, the cantilever wasn't anywhere to be found.
In your case, if the stylus gaurd was in place, I don't see how the cantilever could be missing.
In your case, if the stylus gaurd was in place, I don't see how the cantilever could be missing.