Allegorical bust portraits of men from antiquity

STUDIO OF GIOVANNI BATTISTA TIEPOLO (VENICE 1696-1770 MADRID) Allegorical bust portraits of men from antiquity the first and second inscribed with Greek letters detached fresco, oval, en grisaille the first: 14 3/4 x 11 1/2 in. (37.5 x 29.3 cm.); the second: 14 3/8 x 11 1/8 in. (36.6 x 28.1 cm.); the third: 14 1/2 x 11 in. (36.7 x 28 cm.); the fourth: 14 3/4 x 11 3/8 in. (37.5 x 29 cm.) (4)a set of four