Siam Sterling Silver Niello Oval Brooch

Siam sterling silver nielloware. Ramasoon and Mekkala. Nice oval pin. Marked Thailand 925. Good quality in good condition. 5 grams. Vintage. I have thousands of pieces to list. I collected for decades. All pieces ship in a box properly packed. I wish I could polish it all but I can't. Almost all Siam Sterling is .925 it may be marked or not.