It was 1923, according to the Ed Holbrook's book "Official Scout Blades".
They were made from 1923 till 1940
I believe you an "Imperial" knife.
If it is the scout knife it with the acorn symbol would be 1923-1926.
Between 1924 and 1933.
1933-1939
1970 to 2006 maybe 2005
The RH 50 was a Boy Scout knife made from 1925-1940 with several variations.
80 to 150 depending on condition
Union Metallic Cartridge Company Marcus Hartley and Partners purchased Remington Arms Com and combined it with Union Metallic Cartridge Company which was also owned by them into a single company in 1912. Remington UMC
You could use a knife, scissors, or a chainsaw, depending what material your circle is made from.
You can wear this knife as part of your official flying uniform. So says the card issued to me with the knife in 1972.
There are many websites and companies that offer reviews for many different Remington knives. Some of these websites that offer reviews are Optics Planet and Knife Outlet.