Bangle with 4 brilliant-cut diamonds and 11 octagonal diamonds

Bangle with 4 brilliant-cut diamonds and 11 single-cut diamonds totalling 0.39 ct (engraved), ca. WHITE (H)/SI, 14K yellow gold/white gold, 20.5 g, polished/satin finished, circumference ca. 17 cm, dimensions: ca 55.9 x 46.9 mm, W: ca. 3.5 - 12.2 mm, 2nd half of the 20th century, minor signs of wear, with hallmark.