Yes, E......the "C" in H.C means that it is multi-coated...to make life more confusing, SUBSEQUENT versions of an "x".C lens may not have the "C" but still be multi-coated...
by example, there is a 105/2.5 silver-nose P and P.C....and a later PRE-AI version with the long scalloped metal barrel is marked "P" and is multi-coated....
For more confusion:
http://forum.mflenses.com/viewtopic....22699&start=15