Was it a Bell AFCS which gives you attd hold but there is no alt hold , heading hold or nav function.
Basically a glorified SAS but most useful for IFR.
Or was it a Sperry system? There was a "full Sperry" which had all the bells and whistles and the "1/2 Sperry" which was basically equal to the Bell AFCS.
There are some 212s which had a Sperry panel with all kind of options alt, hdg, nav ect but none worked and the placard that said they did not had long ago disappeared.
Long time ago but I am sure someone will be along with knowledge and truth directly.