A 20th century watercolour adhered overall to an acidic backing During removal of the acidic backing another
signed picture was revealed on the reverse
.
The acidic backing board was
removed leaving its paper top
layer during the removal of this
paper the reverse painting
became evident
The picture revealed on the reverse
The artwork
Before treatment
After treatment
A late 18th century pen and ink and watercolour painting which
had become disfigured by acidic brown discolouration over time.
A Portrait watercolour, solidly adhered to a brittle board.
Before treatment
After treatment
After treatment
Before treatment
After treatment
Before treatment
A 19th century watercolour with uneven discolouration due to broken glass.
Before treatment
