The Model #9, Pro Thrower 1st appeared in the Randall catalog in it's 1948 publication. It is shaped differently than your example, being a more "slender" handle. Newer versions are more bulbous.
Bo had a couple made for his own personal practice, hobby, etc...in the late 1930's (38 or 39) according to Gaddis' book. Although I cannot (& I don't know if "anybody" can) "exact date" your example. my best "educated" (?) guess would be mid to late 1950's, considering your photos, etc.
Hope this helps...and "welcome aboard"!
Stay Sharp,
Capt. Chris

Thank you, sir. I appreciate the information and look forward to being part of of the community!

Here is a comparison of the 1948 knife (top) and today's knife (bottom).

...and I found this one on the web--described as:
'Model 9-9 "Pro-Thrower" - 60s - One Off? by Randall Made Knives'
This one looks a little more like the one shown by Macdone, above.

I have said it before but this group is a treasure trove of information for sure. Y’all ALWAYS impress me!
Shoot870p

Many thanks to the group. There certainly is a wealth of knowledge here. I'm a little late to the game, having just started collecting Randalls, but better late than never I guess. I look forward to contributing whatever I can to the community. Cheers!

Welcome Aboard! I've been at a dozen or so years and the more I learn..... the more I realize.... There's a lot more to learn!! Enjoy the ride!!!!

that one is in a Moore sheath, so earlier. The newer version appears to be made of flat stock, a completely different knife than vintage.

Morning everyone! My first post here, and it seemed appropriate to jump in headfirst.

I'm fairly new to RMK—most of my collecting is early Smith & Wesson revolvers. Picked this up this past weekend and curious to learn more about it.

Mike

Mike--

Great find!

I think that knife makes you an advanced novice.

I hope knowledgeable people will chime in and give some history on that sheath. It is not something I have seen before.

Larry