A diamond engagement ring, diamond eternity ring and wedding ring, 1930s, the engagement ring set

A diamond engagement ring, diamond eternity ring and wedding ring, 1930s, the engagement ring set with a circular-cut diamond weighing approximately 0.40 carats, to a platinum band, the shoulders millegrain-set with single-cut diamonds, size O, indistinctly engraved; together with an eternity ring, set with a continuous band of single-cut diamonds, size M1/2; and a platinum wedding band engraved with foliate scrolls, size M1/2, indistinctly engraved, dated 22.3.33