I'll hazard a guess. Could the X indicator have been used by the host, so that whoever drew it would receive some special honor, or place?
Having participated in many drawings for stands on dove shoots I find the set charming, in it's quality. Definitely a carryover from the mindset of the wealthy class of Englishmen. At dove shoots around here the more common means is to draw a poker chip from a little bucket that is passed around by the host, on which numbers have been written with a black "magic marker". If a deck of cards invites the Devil to the premises, what say ye of poker chips?
