Can’t view the pictures but sounds like R.C. above the series name, RACINE. If so, that’s a mark used by [b]Philipp Rosenthal & Co.[/b] (from Selb, Bavaria ) between 1891 and 1907.

[i]EDIT: Now that the images finally load I see that the base shows an additional signature, “Beck”, which is probably the name of a former owner or the hobbyist which (re)decorated the item.[/i]