AC Dryer Manufacturer Specs for '71 280SL

[Nate]

Is there a part number or distinguishing features for the correct AC Dryer for a '71 280SL with the dealer installed Frigiking AC?  I'm trying to locate the manufacturer's name with no luck.  I've been told that they may be similar (if not identical) to the Dryers on a 280SE of the same period. If someone could please post a picture of the correct Dryer that would be very helpful.  Thanks!