The Blue Book provides a base price for a standard model. It then adds percentages for rare variants, like specific barrel lengths, factory scopes, or "Racine" (early) production marks vs. "Arkansas" (later) production.
While the latest editions are primarily sold as physical books or paid digital access, you can find reference material and older versions online: blue book of airguns pdf
: It covers everything from vintage 18th-century models to modern precision instruments from manufacturers like Benjamin, Crosman, Daisy, and Feinwerkbau. The Blue Book provides a base price for a standard model
That weekend, Arthur didn't leave his house. He sat at his kitchen table with a cup of cold coffee and scrolled. He learned that the Walther LGV he thought was a standard model was actually an "Olympia" variant with a specific diopter sight worth three times the gun itself. He learned that the "Blue Book Rating" of 98% was a harsher judge than he was—that a single tiny scratch on the cylinder could drop a gun from "Excellent" to "Very Good" and slash the value by hundreds of dollars. While the latest editions are primarily sold as