My car is not A/C original so I only have the non clutch 4 blade fan currently in my car. I did find some info for you here:http://www.camaros.org/coolingsystems.shtml#fan
ēThe 3937779 fan had a 2" pitch and was made by Schwitzer. It was used early in the 69 production year (until approximately November of 68) and has the part number and month / year stamped on the fan blades.
So the part number and the date code H 68 on the fan meaning Oct. '68 which I think is correct for your car.
The clutch I am not quite sure about. I looks correct for an Eaton but I thought the Eatons were stamped CZ instead of Eaton-AC or the picture actually appears to be Eaton AG.
I do not know what the number on the bottom of the clutch might mean? Possibly a date code but I am not sure.