Original Lamson length and width?

I’m making a prop knife out of Balsa, Can anyone tell me the exact length and width of the original? I’m thinking 17" but I think it’ll look too big and might be kinda stupid looking. :laughing:

I believe the original Lamson’s were 17" to 18", I’m not sure about the width though, sorry,

that’s okay, width really isn’t that important. I was thinking around 2 1/2 for width. Thanks!