Q What is it? I'm sure it is an individually printed item - this is the fourth or fifth time I have had one. What does it communicate?
I have been studying the history of the treatment of smallpox in the eighteenth century and would suggest it may be a ticket for admission to be innoculated against smallpox.
The image appears to show a rather crude stylised interpretation of the original method of innoculation. By 1774 there were numerous hospitals and private practicioners in London and throughout Britain offering such a treatment.