If I was you I'd take it apart CARFULLY and put some small engraving who ,when ,where the thing came from . Its not that old....?
I cant believe that he would make it then not mark it
? That thing could be around could for 200 years or so .
Then Cannonmn's decendents
will be on here posting 'What is this thing? Why is it here ?
Why didnt that maker mark it !!!' The carriage looks well made too , I'm sure your German freind did not make junk ! Gotta love those Germans ....,
Gary