..... OR to put that another way... Please Don't use Abbreviations they can get quite confusing.
Now not sure what sm and lb mean, with out the back of the coin I'm not even sure what country it is from, my guess is Canada, but again with out the back I can't even tell what the denomination is, dime, quarter?
If it's from England and the date is 1966 then there is no silver, if it is from Canada and the date is 1966 then it is 80% silver, they didn't start pulling silver until 1967.
More pictures and better description could help narrow it down.
From your pictures, I am pretty sure it is large beads. If you look at the beads on the obverse, small beads are small enough to fit a bead in-between each of them while large beads are to big.
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