The gear was already unpainted in original condition. I just cleaned it and decided not to paint it. The point is, that by total restauration unfortunately most of the "vintage charme" is gone. This is always a big problem when you do such work. So it is helpful to keep some features in previous conditions to remark somehow the real age.
By the years I have learned, that in the very most cases for the value of the model it is better to keep it in original condition and just to repair it. I am lucky to have made some photograph in arrival condition which show me still, that it was definitely a wreck and no more good for any repair.
The origin has likely become impossible to find out. The model was sold twice on Ebay. The first buyer tried to start repair, but gave up after a year. Then I got it.
My assumption is either a manufacturer model made at Heinkel in one of their workshop or a model made by Luftwaffe soldiers of an educational staff. A little hint is the marking including an "A", which stood for "Ausbildung" = Education. Those B1 types were still used until beginning of WWII for training. On the other hand the quality of the marking application was very poor and in opposite to the camo paint quality, which was very good. Eventually the marking was applied later after the finished model changed owner's hands... It will remain a mystery....