These are almost the same thing as the PlayStation Master Disc 71PS CD-R, essentially the retail equivalent available to the masses (albeit in a 74 minutes capacity). They also include a Disc sub type in the ATIP.
Output of cdrecord -atip:
ATIP info from disk:
Indicated writing power: 4
Is not unrestricted
Is not erasable
Disk sub type: Medium Type A, high Beta category (A+) (3)
ATIP start of lead in: -11849 (97:24/01)
ATIP start of lead out: 336075 (74:43/00)
Disk type: Long strategy type (Cyanine, AZO or similar)
Manuf. index: 25
Manufacturer: Taiyo Yuden Company Limited