The British Library holds a manuscript copy of a version of the Three Living and the Three Dead (see above). BL Arundel 83 f 127
It’s of interest to see what the colours would have looked like originally, and to see the similarities in the conditions of the three dead.
“Our” right hand King is holding up his hand in a very similar pose, and one wonders whether originally it was holding a hawk as in the BL version.
This site shows another version, in a church. Seemingly the hawking party was the usual treatment.
The moral of the story is that the three kings, “flaunting their vitality” are reminded of their mortality.