CIRCA 1880, IMPRESSED GJ MONOGRAM AND CRESCENT MARK AND F

For a similar example in cobalt-blue see Robert Cluett, George Jones Ceramics 1861-1951, Atglen, Pennsylvania, 1998, p. 68, fig. 125. For an example of the same form and coloration, see Marilyn G. Karmason with Joan B. Stacke, Majolica A Complete History and Illustrated Survey, New York, 2002, p. 95.