Fantasy place? The surface is varnished but someone smoked a lot around the painting. What's good for cleaning?
I know, saliva works good for dirty oil paintings but may not work here. The varnish is soaked with tarnish that seems not to come off that easily.
Hi, We cleaned a lot of old (125 years) church paintings which were covered with smoke (incense) and more smoke from a fire. It took a hellva amount of spit but they cleaned up nicely. greg
Thanks Debora. Very likely the Appian Way and the artist I guess used his imagination to reconstruct the buildings.