My greatest find was 2 weeks ago at a local auction. I bought 3 pieces of plywood with about 100 knives each wired to it. The knives were covered with dirt dust rat crap rust and every thing else that time can deposit on an item left sitting in a barn for 30+ years. I paid a total of $250.00 for all three boards. Aprox 300 knives.
When I got them home, I started cutting them off the board. I nearly had a heart attack. Every knife I cut off was made from about 1875-1940. Case tested, Cattaraugus, Challenge, E.C. Simmons, Keen Kutter, Wards, H. Sears, and so on. I was like a kid in a candy store.
Now for the sad part. Some of these had turned into nothing but piles of rust. Rust so bad it had pushed the liners and scales out. I realized that the three boards were the progression of someones collection. As the first board was filled the next was started. The ones off of the 3rd board were in considerably better shape and I have found some real prizes. A lot of them have broken blades or handles but that okay. It has been like Christmas seeing knives that I could never afford to possibly own in mint condition, such as a Case Tested 5294X 2 Blade gun boat, Handles are worn but intact and blades although severely worn still snap like new from the factory. I have a lot of them soaking in mineral oil right now and after I get them "cleaned up" so to speak, I will post some pics. I wish I had taken some pictures before I cut them off the boards.
I have some where around 5000 knives but this is my greatest find and has been more fun than any other purchase. My Dad and I spent hours looking through these and telling stories of other knives and people.