Source: Erklarung Des Briefes Des Heiligen Jacobs, published in 1754
This is an example of a wire watermark. Possibly the most humorous image in my collection of watermarks is this one. It appears to be a caricature of a bird, as evidenced by the extended 'feet' which show claws.
Additional Book Information
Erklarung Des Briefes Des Heiligen Jacobs. (By) Reinhard Christoph Ungewitters (Published at) Lemso; gedruct und verlegt von Johann Heinrich Meyer. 1754