Great work Igor.
VH, if you aren't in a rush, I can post some pics of wartime vintage, of close-ups of the Erla canopy. I'm trying to catch up on correspondance etc after being away for a week!
The radio mast could be integral to the canopy, or on the fuselage, and yes, the canopy locking/release handle was as per the 'standard' canopy. The diagonal lines were red, used for aircraft on bombing operations normally, to give a visual angle against the horizon.