Where do I find the path of the current desktop background in Cinnamon?

I'm using Cinnamon on Devuan Chimaera. I'm trying to migrate an earlier user home directory (from Devuan Beowulf). Specifically, I'm trying to use the same background image. But I can't figure out where the chosen background image, or the link/path to it, is stored! I couldn't find anything relevant under ~/.cinnamon. Where is it? :-( Note: Related question which doesn't seem to answer my question: https://unix.stackexchange.com/questions/115424/where-does-cinnamon-store-its-desktop-art-settings