Model Nr. 4
Boehm's top Model Nr. 4 was introduced roughly at the same time as the other standard models, that is in 1905. This model also underwent some changes during the nearly 40 years of its production although it remains unclear which of these changes were made for aesthetic reasons and which had to be done due to a change in the materials he received from external providers.
An obvious change in the edging
Apart from this, the very first Nr. 4 has already the same features as the other instruments from before 1920 (at least as the few ones that are known today). The later Waldzithers display minor variations in their design: On the back, the edging and the middle strip
The tuners and tailpieces of Model Nr. 4 are the same as on the other models but it seems as if Boehm provided these instruments even in later times with Portuguese screws if