Well the Swiss did not make it... "Swiss" was code name for
"Siemens Elektrowärmer G.m.b.H., Werk Sörnewitz"
there are other code sources out there that should say the same thing.
After that statement, that company only made them, as stated for 1 year, 1939 .
Now if you can find a MG34 lafette that is somewhat original for less than $3,5000 that sounds like a good price this day and age. 2017.
That price might be a good price for that lafette,,, up to the condition and how original it is. Like to have seen the pics.
In the last few years Lots of lafettes have been put together with Lots of miss matched parts. Just because you put a German back plate on a Yugo lafette does not make it original. Please see Radar's great work on this.http://www.bergflak.com/lafette/evo34.html