A question from an ignorant man: many of the old LF cameras that I have inherited seem to have the frosted side of the GG facing out - on the back side of the camera, not facing the lens. They are old and have been kicked around some, so I can't say that that is the way that they were made, but they seem to work pretty well with modern film holders. Is it possible that the previous owners reversed the glass to make up for the difference between glass plates and film in terms of the placement of the emulsion in relation to the lens?