Similar examples are seen in the red book, but none exactly the same. In addition to the ghost of the cross and circles part of the TM, also note the ghosts of crossing reinforcement bars. Changing to reinforcement rings doesn't seem all that odd, but erasing parts of the TM sure does. A similarly modified bail handle griddle pattern is shown in the red book dated ca. 1915. Older pieces with the crossbars and slant logos are dated 1909-1910. In any case, judging by values for #10 handled griddles in the RB and BB, I'd say $50-75 if, as the books say, "in excellent condition".