: Detailed descriptions and trademark indexes that cover airguns dating back as far as the 18th century.
For years, Arthur flew blind. He bought a beautiful BSF S20 for a song, only to realize later he had overpaid by double. He sold a pristine Diana Model 75 for a fraction of its worth because he didn't know the "Match" trigger was a game-changer. The market for airguns was a labyrinth of variant stocks, limited runs, and obscure German proof marks. There was no map. blue book of airguns pdf
