Kohlert, Graslitz. Started to make saxophones around 1900. The founder was Vinzenz Kohlert. A saxophones engraved with "V Kohlert's Söhne, Graslitz, Checkoslovakai, A sax made by Kohlert with Vinzenz sons, Rudolf, Daniel and Franz in charge. Vinzenz Kohlert passed away 1900. When I look at old saxes I look a the engravings/stamps, serial number and case. Here is info on a Kohlert modell 1927. Serial numbers. Not only the unique number sbit also the size, "funt" ....... . The case can give you if they put a stencil/trade mark brand sax in a original case. Sorry for the blurry pictures.
Engraving. The the chimney was drawn, hammering out by small hammer. White thick pads hold with a washer and screw, No "glue"
Serial number. In this case six digits.
The original case. The soprano fits perfect into the case.
Kohlert, Winnenden. After WWII Daniel Kohlert started a reapair/renovation workshop in Winnenden, Schwaben, West-Germany, with his sons Max and Ernst. Two of of Rudolf Kohlert sons also joined the Kohlert Winnenden. The real name was Kohlert & Co. They company started in 1946.
For many years ago a talked to a guy about Kohlert Winnenden production. I wrote down in my note book while he was reading/talking. So there can be some mistakes. Uwe Ladwig use to write in Sonic about german related saxes.
-52 #1000
-55 #24000
-57 #43000
-58 #60000
-60 #64000
-66 #85000
-70 #89000
Kohlert & Co started Winneden, Baden Württemberg. Hammerschmidt in Burgau, Baden Württemberg. Julius Keilwerth and Dörfler & Jörka, both in Nauheim , Hesse. Hohner in Trossingen, Baden Württemberg. A saxophone cluster. When I look at West-Germany made saxes I can trace some relationship.