This is a wonderful vintage hand wrought Mexican sterling silver hinged cuff bracelet. Modernist looking but dating back to the 1940s, the top features reversible oval shaped stones that are set into sterling. Stones appear to be floating. One side is a brown agate and the other turquoise. Can be worn Brown side up or Turquoise side up or split in the middle! Flanking the stones is shadow box cut out work. Bracelet is approximately 1-1/4" wide at top, tapering down to 1/2" at the clasp. It is hinged part way for easy removal. Clasp shuts with a firm click and has an additional safety catch. Bracelet is stamped with an early eagle mark: "3". It is Marked Echo En Mexico, Sterling, 925, the number 3 and the eagle mark. It also bears the maker's name "Sergio", I believe for Sergio Bustamante. Marks such Mexico Silver" or Echo en Mexico "Silver Made in Mexico" are seen on jewelry pieces from the 1920's through mid-1940's with varieties of silver standard .925 purity or above. The Eagle mark 3 was for Taxco. Brown agate is in excellent shape. Turquoise stone has some natural surface inclusions and a surface hairline across the upper part but does not detract from the interest and beauty of the piece. I have not cleaned the bracelet as it has a natural patina build up. Bracelet measures 2-1/4 across with an inside circumference of approx 7-1/4" and an outer of approx 7-3/4". It weighs 87 grams. Very nice wearable condition with some minor surface scratches from age and wear. This is a very interesting and unusual piece.