I wonder what a pothook is. I like the ad's genteel look. :)
I found this online: "Pothook: an S-shaped hook for hanging pots and kettles over an open fire, a written character resembling a pothook, a curved stroke in handwriting, especially as made by children learning to write."
Interesting! I can picture the pothook supporting a kettle. The term paraph is familiar with all its curlicues, but not pothook.