Charl Landsberg
Neil Moffatt@charllandsberg A coin for scale can help I find. I am curious of the size ...
Very good question: These are all ACEOs. 64x89mm or 2.5x3.5inch. If it helps a little the grid below the clipboard (which isn't very visible in the first picture) is a 25mm/1 inch grid. If you see folks talking about ACEOs they will nearly always be this size, about the size of a standard trading card.
@charllandsberg Tiny enough to make the paintings all the more remarkable. A fine shake-free hand I would presume to be vital.