These Canadian dimes can be quite valuable if they are old and in good condition. Most of the Victoria examples you see are worn to a frazzle. Later coins, with Edward VII and George V, are somewhat less valuable. Canadian coins show the portrait of the reigning British king or queen, so your coin may not look precisely like our picture. These coins contain 0.070 troy ounces of silver.
Here are some typical catalog values:
10 CENTS 1858 TO 1901 VICTORIA
worn: $20 US dollars approximate catalog value
average circulated: $60
well preserved: $120
fully uncirculated: $400
10 cents dated 1872H are somewhat rare, multiply these values by four
10 cents dated 1884 are rare, multiply these values by six
10 cents dated 1875H and 1889 are quite rare, multiply these values by 15
If you have a Victoria dime in nice condition, seek out a knowledgeable collector or coin dealer. They can be more valuable than our summary above.
10 CENTS 1902 TO 1919 EDWARD
worn: $4 US dollars approximate catalog value
average circulated: $35
well preserved: $80
fully uncirculated: $180
10 CENTS 1911 to 1936 GEORGE
worn: $1 US dollars approximate catalog value
average circulated: $10
well preserved: $40
fully uncirculated: $120
10 cents dated 1915 are rare, multiply these values by four
Remember these are inflated catalog values. For an explanation, please visit our Terminology page.
From your description you mention that your specimen is struck with 'medal', not 'coin', conventions. I am not familiar with this type of error on Canadian coins, and a quick reference search did not turn up any details of this. However, it is not impossible and there is a slight chance you have a misstrike that would command higher premiums than normal strikes. If it is an error, the reverse would probably be rotated slightly from the true 180 degree position.