There are a number of extant works matching the description which may be considered as candidates, though measurements don't quite match. For example, a work for sale with Whitfield Fine Art London in 2010s, 49.5 x 46.5, a work for sale with Christie's London 6th July 2017, 35.7 x 29.3, or a work in the Prado (no. 1491), 47 x 36