Model 24 is a semi-auto 22.
I just bought one for $200.00
1$
Remington never made a model 22, a model 12 pump (1910), or a model 24 semi-auto (1925).
Remington Model 24 serial no#s were from 00001 to 130,425.Don't know what you mean by long spur and rifle model RW408700?
Manufactured 1927
Made 1926
Manufactured 1929.
The Remington Model 721 in .300 H&H was manufactured in 1948 with a 24" or 26" barrel.
Model 24's were made from 1922-1935. According to Remington's website, the serial number range of Model 24's is 00001 to 130425.
Condition?
Your Remington model 24 was made from 1922-1935.Remington made 131,000 rifles during this time frame.While you do not specify what condition your rifle is in.The rifle is worth 400 dollars if it has 60%of its original finish remaining on the wood and metal and a good bore.If 70%,then 500.00,if 80%then 600.00