As I've said before ....
Even old Jensens have something about them that the new ones seem to lack, solid models though they be!
The detail, elegance and operability of the old German engines are very hard to beat and IMO will never be duplicated as production, so will never really be seen again. Early British engines have much the same that could be said about them, and though few in numbers the French made some fine engines 100 years ago too!!
I have a J. Falk of near the same model as your fine Doll overtype ..... It has always been one of my favorite engines!!!