St. John within an oval band and motto

Italian School, 16th Century St. John within an oval band and motto the motto inscribed 'QVID. EST. QVOD. ME. QVFREBATIS. NESCIEBATIS. QVIA IN HIS. QVÆ. FRIS. MEI. SVNT. OPORTET ME ESE' oil on copper 8 5/8 x 6¾ in. (21.8 x 17.1 cm.) in a 19th Century giltwood Florentine frame