An Elizabeth II modernist sterling silver covered dish

An Elizabeth II modernist sterling silver covered dish, Sheffield 1957 by TH in monogram Of ‘space age’ dished form upon three short cylindrical feet. The pull off domed lid surmounted by a tall tapering cylindrical wooden finials with an applied circular silver boss chased with initials BL ligatured. Full marked underneath, part-marked to lid. Diameter – 9.4 cm / 3.7 inches Weight – 142 grams / 4.57 ozt