I haven't seen an engraved rough rider knife in the traditional forum ever except what Tom may have posted in the past.
This one you posted is engraved:
http://www.bladeforums.com/forums/s...-amp-Related-Slipjoints?p=9242645#post9242645
Its just a couple of lines, but its still engraving to some degree, whatever you want to call it. Other RR knives have the RR engraved/etched into the bolster.