Here we have an interesting little prospect! A 5" gauge Royal Bavarian State Railways ML2/2 tank loco! Super rare beast this, albeit an extremely early stage build with absolutely no plans to go from! We have found a couple of other examples having been made on German websites, (a photo included below), so perhaps the plans have been published over there?
At the very least the boiler looks solidly silver soldered, if a little scruffy and over soldered, it could certainly be liberated to use on your own project if this particular prototype is not for you!
An interesting start though, built by a capable and prolific model engineer who's other finished engines all worked extremely well.
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