Quote Originally Posted by Ian Grant View Post
Schneider once sold a Symmar convertible/combination set for a very short time, but you should in theory be able to use any Combination of Symmar cells in a shutter they fit. That should be possible with Plasmat type G-Clarons as well.

The Dagor type G-Clarons can be mixed (not with the Plasmats, AFIK) and matched, as well. So can Goerz Dagors.