Another very rare model was the Plextor Premium-G.
This was a variant of the standard drive intended for use in music CD kiosks.
The system (can't remember the name) would burn the music of your choice onto a special Taiyo Yuden gold CD-R with a hologram. The hologram was to prove that although the disc was a CD-R, the music had been paid for. The Premium-G was modified to detect the hologram and confirm to the software that the special CD-R had been used.
I don't know if there was any hardware modification to the drive, or if it was just implemented in firmware.
I don't recall ever seeing one of these drives, they were obviously not intended for general distribution. Also I think the kiosks were only used in America, and then only for a brief time. But a job lot of the special CD-R discs was on Ebay last year.
Are these are the sort of drives you are interested in? :flower: