On the site for the Smart mfg Company, it shows where the G in the diamond was also used by Smart....maintained after the acquisition of the Gardiner tool Co of Montreal.
CF&F rings a bell, as I know I have seen it somewhere else. Found it, and it does have a connection with Smart:
http://yesteryearstools.com/Yesterye...0Forgings.html
No C/l\ on mine either. Of the half dozen of these that I saw in the surplus store, more than half were missing their handles.