Somewhere, I have a stack of Solton disks I got from A dealer in Seattle ( Petosa Music) about 20 years ago. Still have 2 MS-60's that work. Used them 4 nights a week for over 20 years.
I'm moving my office to a building I'm constructing. The move will be in October. The disks will show up, and I'll let you know. I only dumped one thing from one disk. The rest are still "new".
Be well,
Russ