It's a common circulation coin worth face value only.
A Canadian quarter
The coin was struck over a 1941 Canadian quarter. It takes a keen eye to see the print of the Canadian coin on the American coin. A 1941 Canadian quarter was made of silver and the American quart was a clad coin (copper line in the reeded edge). So, it would seem finding silver 1970-D (no copper line) would be easier to see than the faint imprint of the Canadian quarter.
25 cents.
i would say about 8 dollars to 25 cents
25 cents
its worth 1 cent.
At the absolute minimum, it is worth its face value ($0.25). It might be worth more, but you would have to get it appraised. Value would depend mostly on condition, along with year and circulated/uncirculated.
It is worth face value unless it is uncirculated then it will be worth around 50 cents.
25¢, like nearly every quarter minted since 1965.
They're both only worth face value.
In circulated condition it has no added value.
It's still worth 20 dollars in Canada.
As of June 2016, it's worth 19 cents US.