The terminology may be debatable, but I doubt there is a simpler method of “binding” a pamphlet. These 32 pages were printed in 1858, and presumably the pin was inserted around that time as well. A pin may be less damaging than a staple, since the ends of a staple turn in on themselves and often pierce the inner folio. Both staples and pins are prone to rust, though pins are more easily reversed. If the head of a pin is too large, it can damage the adjoining pages. Pamphlets from this time are often side stitched in a figure of eight style, which restricts opening. Some of the horizontal creases in the paper may have happened when the pin was inserted 150 years ago. Of course, sewing through the fold is the best method of attaching pages together.
In this case, however, the pin was not causing any apparent damage, the owner (thanks for permission to post these images!) and I decided to leave it in place. Later, I will do some minor surface cleaning, flattening and paper repairs.
Perhaps because pins were on my mind, last weekend I purchased a box of NOS at the Hell’s Kitchen Flea Market . I was intrigued by the fact that the pins were not described as merely plated, double-plated, triple-plated, but were in fact “Superplated”.
After opening the box and seeing them gleam, I decided this is to be a truthful description– well worth the $2 price.