TIFFANY & CO Tiffany & Co. jam jar in 925/1000 sterling silver, featuring a clear glass inner container. The lid is adorned with an acorn and monogrammed ‘MJD’. Accompanied by its 925/1000 sterling silver jam spoon, signed Tiffany & Co. and monogrammed ‘MJD’. Hallmark: “Tiffany & Co. 18423 Makers 7300 sterling silver 925/1000 M”. Date: Early 20th century. Weight excluding the glass container: 247 g. Dimensions: H: 12 cm. Condition: good, slight wear and tear.