This book caught my eye over at Book Worship and the aluminum slip cover reminded me of Alex’s Set In Stone project (although that cover was in Zinc). Looks like the cover worked, the books are in great shape for their age.
Via Book Worship
Aluminum in Modern Architecture
10.12.2009
To me it also has some similarities to the excellent Autechre’s limited Quaristice aluminum cover.
http://sleevage.com/autechre-quaristice-limited-edition/
Great find sir.