Berthoud greatly expanded on his earlier written work in "Essai sur L'horlogerie," the
link first edition of which appeared in 1763. Here at HSNY, we
mondaine montre homme have first and second editions in our rare books case. They're gorgeous,
link but they're a solid medium size, so I'm not going to write about them in detail here. You can come and see them in our library in person, or look at one of several high-quality scans of other copies on Google Books.
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