This vintage Hopalong Cassidy mini keychain pocket knife by Hammer Brand is a must-have for collectors and knife enthusiasts alike. With its original and ambidextrous design, this manual opening knife is perfect for everyday use and outdoor adventures. The black color and plain blade edge add to its classic appeal, while the easy-to-use keychain allows for convenient carrying and accessibility. This knife is a true original and a rare find, perfect for anyone interested in vintage folding knives.