Oh now this is interesting. It’s very similar to that in the Ramsey Psalter and I’m a bit foxed by both. I suggest that there could be two reasons. The first is that gold leaf (white gold/silver??) can stick to the substrate after the last hard burnishing. When a brush doesn’t remove it,
Patricia Lovett MBE
How might one describe what’s happened here? I’d be grateful for your expert opinion(s).