Eccentric Kettle Vented 14 Griswold Wagner Cast Iron

A very unusual piece Unsure of maker ? Weighs in at about 16 lbs. NO cracks Chips etc.. some light rust on the inside that should clean up fairly easily . Outside as shown with build up on the bottom. Bottom reads PAT'D in U.S.A. Aug 16 1887, the second line I can't make out. maybe with a good cleaning it would be legible. Dimensions... bottom of kettle is 10 inches wide and the inner circle is 6.5 inches. Top is 12.5 overall and the inner part measures about 10.75, Height is 9.75 not counting the handle. Please feel free to email me with any questions or concerns. Thank you for looking.