WW2 German Medical Officers HBT Tunic

A totally untouched WW2 German HBT tunic that has been worn by a medical officer with the addition of sewn in cornflower blue piped officers shoulder boards , cornflower piped officers silver bullion collar patches & officers silver bullion breast eagle. I have examined this tunic & am of the opinion that it is originally wartime tailor applied insignia . The tunic would have been purchased from stores by the officer , the factory sewn machine stitched breast eagle & collar patches removed & then the current insignia mounted by a tailor which was a common practice amongst officers. When one examines the weathering around the edges of the larger collar patches there is very clear age shadowing evidencing its time & service wear on this collar. There is evidence of what may be moth nibbling to the green wool backing of each patch & also wear to the rear of the collar. The HBT tunic itself is a second model dating from around the 1942/43 period with all three of its pressed paper collar liner buttons to rear of collar. All of its removeable buttons are present & there are white ink stamped markings to the reverse of front fly. Nice item , untouched & a good mannequin size.