Vintage Mexico Taxco Sterling Silver Abalone Inlay Butterfly Screw Back Earrings

Up for sale is a stunning pair of mid-century vintage Mexican artisan earrings shaped like stylized butterflies. Hand-crafted in solid sterling silver, each earring features vibrant, iridescent hand-cut abalone shell panels set in custom channel cells. The shell showcases a lovely natural coloration with shifting hues of green, pink, and yellow.  ⠀ The reverse side of the wings features clean, crisp stamps, containing the artisan hallmark ECF, 925, and MEXICO. The top of the wing also includes the official government-issued Eagle Assay mark with the number 1 inside it. This assay mark dates the pair's production between 1948 and 1979 (most likely 1950s–1960s). They are completed by secure, smoothly functioning screw-back mechanisms for unpierced ears.  ⠀ Item Specifications • Type: Vintage Screw-Back Earrings (Non-Pierced) • Design: Segmented Butterfly Wings • Material: .925 Sterling Silver & Natural Abalone Shell  • Total Weight: 5.3 grams (for the pair) • Origin: Taxco, Mexico • Hallmarks: ECF, 925, MEXICO, Eagle 1 Assay Mark • Era: Vintage / Mid-Century (circa 1950s–1960s) ⠀ Condition Excellent vintage condition with a warm, natural aged patina. The silver retains its structural integrity without bends or deep scratches. The screw-back hardware operates smoothly and holds securely. The delicate abalone shell inlay remains completely intact, sitting flush inside the frames with no missing pieces, deep cracks, or major chips. Please review all high-resolution macro pho