Condition
This caricature is painted in gouache, a medium which is particularly sensitive to water. It had been fully adhered to a non-archival mount and backing board which had caused discolouration. There were also extensive foxing spots probably due to mould present in the framing materials.
Treatment
- Surface cleaned.
- Removal of non-archival mat and backing boards.
- Aqueous cleaning on suction table.
- Reduction of stains and discolouration.
- Applied new archival backing.
Before treatment
After treatment
