If you really want carbon steel, at an affordable price, I suggest looking for a NOS Kabar 1152 on auction. You can often find them new in box. It was made by Camillus, and has all carbon steel springs and tools. Deeply jigged Delrin scales. It's a heck of a knife.
The Queen 98 is also pretty nice, although a little expensive. Stainless tools and an awesome thinly ground D2 blade. Fit and finish can be a tad dodgy, but the covers are quite beautiful.
The GEC #98 Texas Camp Knife is of extraordinary quality and is carbon steel. But it's rare and crazy expensive on the secondary market. It's also too large for many people. Somewhat nonstandard blade configuration too.
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