So good to have you posting again John
Your channel has always been one of my favourites on YouTube, so i´ve been missing your updates.
Sure is a nice old engine there...
I´m not very knowledgeable, when it comes to old German steam toys, but certainly would be great to get a firm ID.
Nomatter if it´s original or not, it would make it much easier to hunt down parts, if everything on there are properly identified.