100-400 USD
2520 as a percent = 252000%= 2520 * 100%= 252000%
30% of 2520 = 2520*30/100 = 756
50-500 USD or so depending on condition
That form of the Stevens name indicates manufacture between 1886 and 1915. Since you have a serial number, the Stevens historian may be able to give you an exact year, for a fee. savagearms.com should have his contact information.
Scott #'s 2517-2520 29 cents.
Almost nothing unless you can prove it left the factory with a nickel finish.
It is: 2520
LCD(2520, 4) = 2520.
168
10 percent of 2520 is 252
The LCM is 2520.
11