This is a rare misstruck error and is worth up to $90.00 according to condition.
About a dime.
I have a Canadian Dime 1980 with smooth edges too but have no idea how much it is worth
10/25 = 2/5 = 0.4 = 40%
Face value unless it is uncirculated or proof.
Divide the value (in cents) of a quarter, by the value (in cents) of a dime. Alternately, you can also use the value in dollars in both cases.
10/25 = 2/5 = 0.4 = 40%
Take another look at that coin. The sailboat is featured on the Canadian dime, while the quarter has a caribou. Either way, a 1969 Canadian dime or quarter is only worth face value.
Your coin has been chemically altered -- like with acid -- and has no added value.
No pH value, cf related questions on pH of dime-quarter-penny
It's still worth 10 cents in Canada.
Quarter= 25 cents Dime= 10 cents
$34900