When you're shopping for vintage computing references and textbooks, the 1979 Giant Handbook of Computer Projects from the editors of 73 Magazine is a title worth considering. It lands in the magazines, textbooks, and reference territory that still attracts readers interested in early home-computer design. Two hardcover listings are both at USD 25.00, so price alone won't separate them. The real decision is how you plan to use the book: one copy is presented as the higher-grade library copy, while the other is a reading copy with a cosmetic flaw. The shared 1979 hardcover origin makes the condition comparison the main event.
Quick verdict
Pick the higher-grade hardcover if you want a more presentable reference with a stronger condition tier. Pick the practical copy if you want a usable text and don't mind the cosmetic issue.
At a glance
| Higher-grade copy | Reading copy | |
|---|---|---|
| Listed price | USD 25.00 | USD 25.00 |
| Condition | Good; ex-library; illustrated | Acceptable; coffee spot on bottom through page 24 |
| Edition details | First edition; 503 pages | ISBN 9780830697243 |
| Shared basics | Editor: Seventy-Three Magazine Editors; 1979; hardcover; English | Same |
Which copy wins
- If condition grade is your priority, the higher-grade copy wins because it carries the more favorable condition designation.
- If your goal is to work through the projects without interruption, the reading copy wins because its pages are unmarked.
Product notes
#### The Giant Handbook of Computer Projects (Good, Ex-Library)

This is the copy to choose when a stronger condition tier matters more than an unmarked cover. It is a first edition with 503 pages and illustrated content, so the original project diagrams are part of the package. The stated educational level is adult and further education, which fits this editor-authored project guide. The caveat is ex-library provenance: library markings come with the territory, and that will matter if you are looking for a completely clean collector copy. If you are assembling a project archive rather than a pristine collectible, the higher condition grade plus the illustrated first-edition details make this the more complete reference package.
#### Giant Handbook of Computer Projects (Acceptable, Coffee Spot)

This copy works best as a reading text. The coffee spot appears on the bottom through page 24, but there is no writing or highlighting, which is practical if you plan to follow the projects by hand. Acceptable condition is the trade-off, so the cosmetic stain remains part of the book's presentational story. If collector-level appearance is not your priority, this is the more forgiving route to the same 1979 content. The unmarked pages make the stain easier to tolerate when the goal is working through the project instructions rather than displaying the cover. That makes it the practical pick for someone who wants to use the handbook as a working reference rather than a display piece.
Final choice by use case
Choose the higher-grade copy when you want the stronger condition tier for a study shelf. Choose the practical reading copy when hands-on use matters more than exterior condition. Let your tolerance for condition quirks be the tiebreaker.