Looks like an old Canadian silver dime. King George the 5th. From 1922 to 1927, no 10-cents coins were produced. So either 1911-1921 92.5% silver or, 1928-1936 80% silver.
You can rule out 1911 (wrong obv legend) and 1912 (wrong reverse). So it's 1913-21 or 28-36. Sorry, but that's the best we can do with a worn off date
I've gotten a few like this in mixed lots of Canadian silvers. Dealers will always give you the benefit of the(ir) doubt and pay you based on the 80% junk silver rate