Millimeter bindings

Millimeter bindings are the most well known of the four types of Danish Paper Bindings. The name comes from the amount of spine leather exposed on the board edges along the joints.

 

The earliest ones were made in 1941 and were a result of the German occupation of April 1940, which created problems in the supply chain in bookbinding materials.  Thus the subsequent need to use small amounts of leather in the making of leather bindings. Unfortunately people apply this reasoning to the other three types of paper bindings, but it is only the Millimeter which was the result of war shortages. Note that Park did make half leather bindings throughout the war, and still had leather available at the end of the occupation in May 1945.

 

This has become the most popular of the three paper bindings which use vellum/leather. (I suspect that more paper bindings were made without leather/vellum used.) They are certainly the easiest to make, though the best ones have aspects which require great skill and accuracy.

 

More examples can be found here.