The Tiffany & Co. 18393A Makers 3502 mark appears on sterling silver pieces crafted by Tiffany & Co., renowned for their meticulous craftsmanship and historic American luxury. The number 18393A is a pattern or order number, with the letter A typically signifying a modification or variation of an original design. The Makers 3502 number identifies the specific silversmith workshop or craftsman responsible for producing the piece. This mark guarantees the authenticity, quality, and traceability of the item within Tiffany’s rich silver manufacturing history.