The Story Behind This Sofa
Silver leaf is genuinely harder to work with than gold, and almost nobody explains why.
Gold does not tarnish. Silver does - it reacts with sulphur compounds in ordinary air and darkens over time, which on a sofa frame would show first at the raised carved edges where the leaf is thinnest. So a silvered frame cannot simply be leafed and left; it has to be sealed with a protective coat after burnishing, and that coat has to be laid thin enough not to dull the metal it is protecting. Too heavy and the frame looks like painted grey; too light and it will darken within a few years.
The leaf itself is applied the same way as gold - tissue-thin sheets laid by hand over a prepared ground, one overlapping section at a time, then burnished up. Because silver is cooler and flatter in tone, it hides less than gold does, so the carving underneath is sanded further before any metal touches it. Every tool mark that gold would break up with warmth, silver shows.