Found one that sold here:
https://www.etsy.com/listing/181980374/vintage-metropolitan-museum-of-art-david
"1982 Metropolitan Museum of Art / MMA Faux Ivory Magnifying Glass featuring David & Goliath holding heads of their enemy after battle. MMA collectible or replica of an original work of art. Measures 71/2" long and in very good vintage condition. Marked MMA."