Originally Posted by American Viking

NO.

If you only have one cabinet, it's
16 amp out to 16 cab in
or
8 amp out to 8 cab in
or
4 amp out to 4 cab in

The back of the 1960 cab is clearly marked on the right input, MONO 16ohms. Have the switch set to MONO also. Mismatching the impedance will severely damage your amp.
Even safely running the amplifier at 4ohms from the amp to 4ohms on the cab runs your amp harder and stresses it out for no reason. There is no auditory benefits for running low impedance. Stay at 16ohms and keep your amp happy.