Large gossip compass suspended in a royal crown and with Frederik V's monogram, 18th century

Large gossip compass suspended in a royal crown, glass dome with Frederik V's monogram painted in gold, glass clinker, copper piece compass rose with inscription 'Rasmus Koch, Kiöbenhavn Anno 1765'. H. excl. suspension hook approx. 48 cm, Ø approx. 46 cm. Has a patina, probably partly later painting and completion (small screws), glass dome clinched.