These are paste papers from an early 20th-century edition of the German translation of Le déserteur, an opéra comique by the French composer Pierre-Alexandre Monsigny. Book from the collection of Leon Laserson.

Limited edition binding with a vellum hardcover.

The typeface used on the title pages is Weiß Fraktur by Emil Rudolf Weiß.

Leon Laserson (1887 – 1946) was a Jewish engineer from Riga, Latvia. During the second part of his life, he settled in Romania and made his fortune in the oil business. Soon becoming a notable art collector in Romania, he also collected books.

I found this book at a book market in the Hague. But as you can see, it was first sold by some Romanian antiquarian bookseller.