Would anyone here be able to identify the maker of the plate with the mark shown on the left? It is from a Willow Pattern plate recovered from the wreck of HMS Erebus. The mark on the right is the closest match I can find from a plate on eBay.

[img]https://lh3.googleusercontent.com/-x4VA6EjCarY/Vlm_IHhGc7I/AAAAAAAABMQ/PGGI-W8CF7g/s912-Ic42/Pottery%252520marks.jpg[/img]