History: "The Hammer Codex," also known as the Codex Leicester, is a collection of scientific writings by Leonardo Da Vinci. Most of the writings are on the subject of water. Of the 30 surviving Leonardo notebooks, the Hammer Codex is one of the most famous. This codex brought record sales, at the Christie's auction house in 1994, a staggering 30,802,500 USD. Bill Gates was the winning bidder.

Reproduction Details: 

The hardcover books are made with two pieces of real wood on the inside. The leather is a 2 oz cowhide, from a small supplier in New York state. The Glue we use to attach the leather to the wood is made at our facility, and is a period correct wheat glue. The pages are pre-creased to add flexibility. Along the spine, we use a modern perfect binding, with modern glue, to make the binding last longer. Then we each signature is sewn into the book block.  We also add three layers of mull cloth to the outside of the perfect binding, drying in between each layer, a traditional way to make the binding stiff, strong, and resilient. The pictures below with the book block before its glued, and after.

Our Binding Process

  • All orders are made once the order is placed, no returns accepted

  • All orders will take 4-6 weeks to make and ship, less time during non-holiday times

  • Free USA shipping on all books

  • International shipping is calculated with eBay

  • All books will come with a leather of our choice unless otherwise requested

  • Book will have a raised border cover unless you contact us for a custom order


  • All forced eBay returns (item not as described)  will be subject to a 40% restocking fee

  • All forced eBay returns (item not as described) the customer pays for return shipping


All of our book are hand sewn and made love and care, please realize that we do not import them from China.                  

 100% made in the USA