Weight is approx 280 grams and is 12cms wide x 9.7cms deep x 3.7cms high. Stamped STERLING SIAM to the base. Siam was officially renamed Thailand on the 23/6/1939 so this box predates the name change. It has a wood lined interior and unsure if it has a weighted base. Opens & closes ok, very minor wear, just needs a good polish. No history is known about the item.