Bracelet is marked “SI” but so can’t identify the makers mark. It is also marked “Overlaid 11S”. Overlaid is a heavy silver plating over another metal. I have not identified what 11S means. I’m a Poshmark Ambassador II with over 2,600 items sold, have a 4.9 rating, am a top seller, and ship daily (except for Sunday’s). Please take a good look and consider the photos as part of the description. Please ask any and all questions you may have before purchasing. Bundle discounts on multiple items! Check my other listings for vintage sterling silver. 925, 950, gold, 10k, 14k, 24k, abalone, abstract, agate, Amber, amethyst, anniversary, antique, aquamarine, bead, beaded, birthday, bling, blue, bold, box, bracelet, brass, brooch, chain, China, clip on earrings, chipped, Christmas gift, cocktail, copper, costume, crushed, crystal, cubic zirconia, cuff, cz, dangle, double, earring, domed, engagement, estate, etched, fall, fishhook, flower, glass, gray, green, hammered, heart, hinge, hinged, Italy, Japan, Jasper, kids, Korea, looser claw clasp, love, man, marcasite, marquis, matching set, men, Mexico, minimalist, modern, modernist, moonstone, mother of Pearl, necklace, opal, oyster, pendant, picto, picture, post, present, prong, quartz, red, rhinestone, ribbed, rose, Ruby, screw back earrings, Santa, scroll, serpentine, signed, silver, spring, stamped, sterling, sweet, summer, Thailand, topaz, turquoise, 20844