Imation CMC disk .... about 4-5 years old. This one had some balance problems, so I had to scan at 48speed as the drive (and my ears) simply couldn't handle the vibration at 52speed.
I think this would be the last one i'll post .... I could post dozens upon dozens of scans of old disks that still work well with no problems. There have been a few failures over the years, mostly due to serious damage on either the label side, or occasionally, bad scatches on the data side.