Hey guys...
As some of you know, I have 2 Vintage AKG C-414's with the original Telefunken CK12 Brass Capsules.
These were the capsules that were used in the Telefunken ELAM and the AKG C12 mics. The C-414's also used this capsule until around 1980 or so, at which point they changed to a mylar diaphragm.