Please help identify my propeller

[kmarks]

Hello all, I have looked, perhaps failing to find it, but I have an old propeller, approximately 6' in length, with markings near the hub, that have K10, then below this, are the numbers 20-297 (I'm only nearly positive about the 297 part, as the middle digit is not as strongly stamped as the others). If you know of this propeller or can direct me to find more about it, I'd greatly appreciate it.

[Dave]

Can you post a picture? The numbers aren't familiar.