Seller added that it was a retirement gift to the person he bought it from. He had a Buffet clarinet from them too.
My Buffet-marked Keilwerth has the serial 95,9xx which would make it circa 1990. It is not marked "Made in Germany", which was probably a bit naughty but would have been a give away.
Are you suggesting that made in Germany is better than made in France?
For cars maybe, but for musical instruments and saxophones in particular, OMG! I can't believ someone can even suggest such a cruel thing!
The tenor looks very similar (but not absolutely identical) to my German built EX90 (946**).