Either .30 or .35 Remington for the Prospector, they would be the correct era for the original R1173. The Remington Model 8 self loader was made from 1906 until 1936 in .25, .30, .32, and .35 Remington. The .35 Remington remained a popular cartridge in the Marlin 336 (in direct competition...
I'm an old Georgia native, never used Coke as a generic.
Coke or Pepsi (blasphemy), soda is a northern term. Oddly, Dr Pepper was fairly popular among some of my older relatives in 50's. Tasted nothing like the Dr Pepper of today...almost medicinal.
Very nice, Browning has commissioned some fine knives over the years. The Japanese and Gerber made are my favorites. Some like the Bailey Bradshaw folder are incredibly well made. Vastly underrated by most in my opinion.