panel 22, condition of internal surface:
Glass:  less deteriorated than external face. Departure of the surface of the glass on
            some areas.
Paint:   ancient painting with thick lines and wash drawing, brown-red and black painting
Lead:   good condition
Putty:   dry and waterproof
Consolidant: not visible except after a light cleaning (cotton swab moistened in water),
            no sign of alteration
Deposits: white (brownish) deposit on most of the pieces (distemper? putty residue?).
            They often dissimulate glass corrosion.
Bonding: silicone glue retouched with a cold brown painting when necessary, no sign of
            alteration.