History of classic car registration

Hello together, am from Oberbayern, Rosenheim. I have a problem for the registration of my Camaros. I bought that vehicle from Switzerland in December. So to become a mechanic of my trust due to modifications and subsequent TÜV acceptance. Last week TÜV received with expert reports for the approval of H. As far as so good. But now that starts. In the Swiss letter the first registration is indicated with 1997. But car is built 1990, model 1991. Before the acceptance at the TÜV my mechanic asked at the registration office according to whether it is possible to get an H approval. The latter affirmed that, but it must be noted in the report by the TÜV which year of construction is that car. This could also be determined by the TÜV on the basis of the FIN and has also kindly stated in the report. Well that problem, I get no registration for that car because of the first registration. The agreement with the colleague is not correct. This is responsible for the county anyway, but I belong to the city of Rosenh eim. I have to prove when the first registration took place and this must be 30 years back for an H Zulssung. That Baijahr is not relevant. Unfortunately, can not prove this, have nothing. Carfax has nothing about my car, Chevrolet unfortunately can not help me either. The previous owner also has no documents, that car has received from a dealer without further documents. On request at the car dealership must check that the still documents for the proof for the first registration They bought a car from a private person in Switzerland, so they didn’t import it themselves. However, I was informed that I could allow a car as a normal car, but the TÜV had to change the report. So again to the TÜV there once asked. In the case of the cases. The examiner was very surprised that I didn’t get an H certificate, it was so agreed and the examiner did the same as advised. The car did not meet the requirements of 1997. So today again to the registration office. They also made contact with the inspector from the TÜV. Unfortunately without satisfactory result. Must say that all participants are very friendly. State of the art is now that the registration office gives me next week how/if I can register car at all if the proof cannot be provided. Has someone had the same experience as me, and then found a solution? F all that car dealership can provide me with no proof of the required first registration, then there is at all a possibility to find out when and where that car was first registered? Sorry people for the long text. Thank you Killa