Wow! What a mustached bookbinder! I just posted some images of decorated initials from Het drukkers jaarboek 1906 recently, but there is much more interesting in this series of books. And amazing book industry ads is one of these things.
With every new digitized book I want to say: this week I found something even more beautiful than before! For how long could that possibly continue? Printers' Marks by W. Roberts is a beautiful reference book with lots of illustrations published in 1893.
I first saw this engraving in a book published to celebrate the fiftieth anniversary of the Netherlands Association of Antiquarian Booksellers. However, its story seems to be not as simple as the text below the picture states.