[cctalk] 93448PC ROM tube

I have a tube of 93448PC ROMS labeled as such: 502991-01 4000-41FF 502991-02 4200-43FF 502991-03 4400-45FF 502991-04 4600-47FF 502991-04 4600-47FF 504236 PAL RM-DPS 1600-14FF 1 unmarked Any guess as to what these went to? Anyone recognize these numbers? Commodore B Series? Throwin' a hail mary pass here Bill