Schertler Schertler guitars are a collaboration between Stephan Schertler and Claudio Pagelli, a Swiss guitar builder . Mendrisio, Switzerland.

“We started with the guitars in 2006/2007
The design has been made by Swiss Luthier Claudio Pagelli
On the sound hole there is always the serial number, with that you can determine the year of production” [Source: Carlo, Schertler sales, email 25/3/2013]