[quote=Noddy]The description for the Ueno Clinic LeMans winner says that they are based on Minichamps models. They certainly look better than the new stuff coming from Ixo / Parma but, then again, they are 3 times the price.
The word "Umbau" is German for conversion/alteration/rebuild or reconstruction; hence these are decal-conversions of diecast models, using waterslide decal sheets to convert previously-isued Minichamps or Ixo models into bespoke Umbau models.
Their value is only what a collector is prepared to offer, since the quality varies according to the skill of the modelmaker and also the nature and quality of the finished conversion.
Some models are highly sought-after, due to their tobacco-based sponsors' livery; others are just fantasy models made at the whim of the converter !
The last two models listed clearly use the same decal sheets as the AB handbuilt series !