The model 0794851630 is a reference you can check against the original publisher’s catalog.
Book of the Black Dragon Peter Hamilton-Giles Volume 1 First Edition
You will notice the Greysheet logo on the lower corner of the endpaper.
CODEX ALTHAEBAN MALIK Book of Abberations Peter Hamilton-Giles Occult
What stands out about this US Currency Bills Catalog is the cross-referencing of error notes.
