While that A. C. Mfg. is an attractive and well made knife, it is not an original model. It was part of a group that was reproduced in the 1980s and was nearly an exact copy of the original Aerial models from circa 1920s. Union Cutlery also offered this same knife with their stamp during the 1920s era (some had a "Dog Head" shield, and some did not). Aside from the few slight measurement differences, the dead give away in determining an original from a reproduced model is the lever which is quite different between the early and late models. Both the original Aerial and Union Cut. Co. variations are very rare and the Aerial types are usually seen with celluloid handles (a common trait for Aerial), while the Union Cut. models are seen with bone handles. Here is an original Aerial model for comparison to the posted model.
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