I am interested in the 856 which I believe uses the Selitta SW300. I emailed Sinn to confirm what grade movement they use as I thought they used Elabore. Below is the response:
“in general we don´t use Elabore grades for our movements.
For all our swiss movement Top Grade or equal is the minimum standard we take.”
Is Top grade one notch above elabore? I always thought elabore was the best finishing other than certified COSC.