Check the date code stamped on it. See related link
You would have to be more specific with details as to date of manufacture, overall condition, etc. The pre-1964 Winchester Model 70 are generally more desirable than the post-64 rifles, and that can drive the value up.
It is pre 1964 with a serial # of 496507
Mercury dimes were made from 1916 to 1945 so ALL of them are pre-1964. You can find values at many sites, such as the one linked below.
$800-$900 retail for excellent POST 1964. PRE 1964 is $200 more.
over 3 thousand
The last year before 1964 that silver dollars were minted was 1935, and they were 90% silver. The melt value at present is about $24.
300-1000 USD what if the gun is pre 1964
A pre-1964 nickel weighs 5 grams.
50-1000 USD depending on specifics.
At present, pre-1965 US quarters have a melt value of just over $5. That doesn't take into account possible collector value though. For specific values, post new questions about specific dates.
A few hundred to a few thousand depending on EXACTLY what you have and its condition.