Hey tFred,
You said you picked up a bunch and listed 10 you are interested in. Since you are from Moncton I am assuming you probably got some St. Andrew by the Sea tokens in the lot too. Those, along with McMuffin Dollars, command a higher premium then most. Here is a great online reference talking about them.
http://www.standrewstradetokens.com/Now for the ones you listed.
If they where pure silver you could probably tell, they have that proof like look to them. Chances are your tokens are argentan
1980 McPuffin Dollar/ Fortress Louisbourg did not come in pure silver according to Pelletier (but his word isn't the gospel) so I would assume we have argentan.
The Samual Hollen/Town hall dollar from Charletown is argentan.
73,000 Joseph Howe Halifax tokens where made and they came in a .99 silver version. If it weighs 17g it is silver.
It looks like the Queen County ones could be arentan too, they made 100,000 tokens that year. Several come in bronze, bronze plated and what have you
If you are coming down to the coin show in Harltand on New Brunswick Day bring them down as you would probably have a buyer in me.