>>2057538 (lb)
>>2057603
>>2057181
Callsign to and/or calling card of the Worshipful Masters?
Indeed.
https://hooktube.com/watch?v=Q PTa_54HPCw
19th century example of [mku]?
https://link.springer.com/chapter/10.1007/978-1-349-20956-9_4
don't particularly care for that game meself.
quite aware of its "history".
card noted only for the "points of light" AND "water" reference.