I have been a very satisfied customer for about 20 years. The team in Jena is always approachable, very friendly and competent and gives a very professional impression overall! If problems arise, help is provided quickly and without complications. The advice is very comprehensive and professional, yet the optimal solution for the customer is sought and not the most expensive. All glasses that I have received from Sieber in the meanwhile many years were super quality. For me, undisputedly the No. 1 in the optics (er) city of Jena!
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