Congratulations on getting the tooth. They ought to stay together.
I noticed something that might be historically significant for vintage collectors. Notice the difference between the "boxed-Norton-Abrasives-logo" on the stone in Ron's chronology, and the boxed Norton Abrasive logo on the stone that came with Don's circa 1954 Bowie.
Just about all the "boxed-Norton Abrasives-logos" commonly referenced have the logo in dark blue/black on the light gray side of the stone. This one has the log printed in white ink, possibly on the dark gray (rougher grit side) of the stone (?) Maybe this was common (?)... though I'm not a mid-50s kind of guy.