Peter Glas gives this information:
I will also send some pictures of my other clarinet, a wooden Hammerschmidt "Klingson" reform-boehm. That is a German instrument with German proportions, but Böhm keywork: therefore called 'reform Böhm.
The Klingson has serial number 50146 and was build september 1960.
My father bought it when he was nineteen years old and gave it to me last year.
The Klinson has got a complete overhaul at the Hammerschmidt factory in Burgau, Germany (www.karl-hammerschmidt-klarinetten.de)