A. Lange & Söhne - 1815 Tourbillon Handwerkskunst

As if their pieces are not special enough, A. Lange & Söhne like to give some extra treatment to a select few of their models.

The models that have been given the Handwerkskunst treatment

A. Lange & Söhne website

A. Lange & Söhne Facebook page

Monochrome's hands-on review

Hodinkee's hands-on review

A Blog to Watch's review

Quill & Pad's review

Watch Collecting Lifestyle's review