Yes. Micro Seiki made them already 30 years ago. But it was not for sale in every country.
We at Micro-Seiki.nl have two Platter Rings in our program.
Platter Ring No.1 is almost a 1 on 1 copy of the original Micro-Seiki Ring. The dimensions and the weight are the same but not the material. We used Brass.
More info: email@example.com
615,00 Euro(Platter Ring No.1; Including Shipment)