UNUSUAL LARGE POTTERY PITCHER SIGNED ON BOTTOM

I HAVE THIS UNUSUAL LARGE PICTHER WITH A LARGE SPOUT, WEIGHT IS 5 POUNDS. STANDS 10" TALL, ACROSS THE BOTTOM IS 4 1/2" BY 4 1/2" AND FROM INSIDE FRONT OF HANDLE TO FRONT OF SPOUT IS 8 1'2". ON BOTTOM HAS THE SIGNATURE OF THE ARTIST. ON LEFT OF THE CIRCLES HAS LF, ON RIGHT OF CIRCLES HAS ARTIST MARKS. DOES ANYONE KNOW THE ARTIST OR WHAT COUNTRY IT'S ORIGIN IS. PLEASE LET ME KNOW.
FOR SOME REASON PICTURES WENT ON SIDEWAYS, DON'T KNOW HOW TO TURN THEM, SORRY