original richly colored green 19th century salvaged chicago unusual figural fireplace tile with frogs

19th century all original antique american 6 x 6 inch majolica glazed figural fireplace tile featuring a group of frogs. the single olive-colored tile was fabricated by the american encaustic tile company, zanesville, oh. the tile contains an allover crazed finish with no cracks or breaks evident. the back has been cleaned from mortar. maker markings visible.