JOHN ALDWINCKLE & JAMES SLATER. PAIR OF MATCHING SALT CELLERS. ANTIQUE ENGLISH JOHN ALDWINCKLE & JAMES SLATER STERLING SILVER SALT CELLARS (2). Beautiful Victorian Era, well crafted set of 2 salt cellars. In excellent condition with minimal wear. 103 grams for the pair. 4 x 2 1/2 wide, and almost 2 tall, measuring furthest points.. ..