Vintage Mexican sterling silver love birds shadow box earrings

Vintage old Mexico shadow box negative space love birds swans with hollow down shape and the birds take shape with the assistance of cut out negative space shadow box style. Very old circa 1960’s No hallmark but acid and metal tested for sterling silver. Earrings are very old with scratches scuffs and wear from age and use. May be bending and warping , patina from age. Please refer to photos for condition and description. Offers welcome