All About Pocket Knives

Fresh from an estate auction and so far as I can see no information on the Internet or in my limited library. 5" toothpick style knife with bone handles and brass liners. The only marking on the entire knife is WK within a circle on the tang stamp. Knife looks older? All help appreciated.

Goin's lists the tang stamp WK inside an oval but provides no information whatsoever.

Looks like you've snagged a rare bird there.

Thank you for posting this information. Does the fact that this is listed in Goins indicate that this is a factory knife or could it still be a knife maker's knife? I hope to stumble on to more about it.