A turquoise and rock crystal seal
A turquoise and rock crystal seal, probably England, early 20th century, the gently flaring rock crystal handle engraved with a grid accented with collet-set turquoise cabochons, the base set with a rock crystal seal engraved with the crest of an eagle above the motto 'ESSE QUAM VIDERE', height 7.8cm, case stamped Wyon, 287 Regent Street