Mitsumi CD-RW 74 (made in Japan)
ATIP 97m27s00f (unknown)
Stamper-SN W0601440409D (Ricoh)
Plextor CD-RW 74 (made in ?)
ATIP 97m26s65f (CMC)
(no Stamper-SN visible)
Plextor CD-R 74 (made in ?)
ATIP 97m27s66f (Ricoh)
Stamper-SN R1125420101D (Ricoh)
Interesting are the similarities of this at first glance different CD-R.
LBA at all 74m12s00f (seen only at Ricoh), similar laser text.