Four reticulated jade plaques

Four reticulated jade plaques
The first of circular shape undercut with eight ruyi lappets surrounding a bi-disc with engraved C-scrolls enclosing a movable quatrefoil roundel; the second of circular shape with bats and peaches above a bi-disc engraved with C-scrolls and enclosing a movable quatrefoil roundel; the third of oval shape with a suspension loop within a cloud bank set above a movable roundel undercut as a dragon boat; the last of oval shape undercut with a jade chime suspending a pair of fish and a bird above a bi-disc enclosing a movable wanzi roundel.
2 1/8 to 2 3/8in (5.4 to 6cm) long (4).