You can read about it here - basically it involves brushing the dial with a brass wire wheel, under a running lubricant stream. GRAND SEIKO FACTORY TOUR Cazalea
I took the whole tour. It must have been quite an experience to go there. I need to find a GS store to play with the pieces. Also, I would love to see the Credor Eichi. I still find it mind boggling when I see pictures. Thank you, Mike!
For the steel, I hesitated on this one as I expect numerous additional releases with other dials and I was waiting on one that really sang to me. If I could have justified the spend I would have jumped on the Rose Gold with that red dial though.
The watch dial is always my first point of consideration when buying a watch. But now i am buying the dial that I like and make a watch that i will love.... Kanagawa Great Wave dial on a SKX009 ...