Porcelain Hippopotamus Hinged Lid Trinket Box with Tiny Hippo Inside, 3.5 Inches Long Hippopotamus shaped Trinket Box by Art-Gifts Hand painted porcelain Grey Hippopotamus Keepsake Box. It comes with a tiny hippo trinket inside. It opens at the center with a hinged metal edge and clasp. Measures: 3.5" long x 1.5" wide x 1.75" tall. Made in China.