12/31/2013. Remarks by Walter van Tilborg: "Schempp-Hirth in Kirchheim/Teck, Germany, built under license a small number of the French Piel C.P.301 Emeraude, later Binder Aviatik in Donaueschingen designed an own development, the C.P.301S Smaragd. This was based on the Piel C.P.301C Emeraude but had increased operating weights and was externally distinguishable by the small dorsal fillet and also featured a sliding canopy.
Powered by a 90 hp Continental C90-12F and registered D-EBIA (c/n 100), the first example was flown in March 1960 and 21 were constructed (c/n 100 to 120) in a cooperation between Binder and Schempp-Hirth. In addition some nine were built as homebuilt project from Binder-supplied parts or plans."