Jimmy Stewart smoked one, It kind of depends the 400's are somewhat collectible as well as the Heirloom models, according to Hackers guide. If you have all the paper work give me as much info as you can and I'll do my best to tell you what you've got.
edit: I just noticed you said it's a Benchmade. They were lower mid-level pipes, essentially Superbriars that had some minor flaws and carved to minimize them. That being said, definitely worth more than twenty, but not especially valuable. As a smoker you'd be hard pressed to find a better smoker at 3-4 times the price as long as the engineering looks good, the quality of the briar was pretty good and 6-7 decades of additional cure time couldn't have hurt it any.
Last edited by jwhite; 12-03-2010 at 08:04 PM.
Bearing the burden of responsibility..... It's probably my fault.
Treat your silver as if it were earthenware and your earthenware as if it were silver - Seneca, Letters of a Stoic