HFg Powder
Jimro , The can I have has the same label as the one in the link you posted . However the can I have is taller 6 1/4" compared to 5" and mine does not have the musroomed cap . The cap looks like the one in the photo posted by LE-28
LE-28, The label on the can I have is almost identical to the pic you posted but for the small white rectangle at the bottom that says E I Dupont DC Nemours & CO inc. The label definately looks like HF or IF
I have trouble posting photos
1 F Black Powder would be rather course , certainly not superfine. I guess we can state for sure that it is Black Powder.