COMANC(HE?) Label

["Chad F. Sibert" <csibert@domain.elided>]

The 152 in my 66 800 has a portion of what looks like an original
sticker on its valve cover.  The sticker is white with black letters
about 3/4" high and is centered above the "International" stamped into
the cover.  The letters are "COMANC" and what looks like part of an
"H".  It might be "COMANCHE".  Is this original?  If so, what is its
significance.

Chad Sibert
Jamestown, NC

2 66 800s  152