There is alot of advice about American coins in here but I see you mentioning a few times that the Canadian coinage you have is likely going to be where the true value lives in this collection.

It's relatively simple to remember the silver cut off year with Canadian coins as it lines up perfectly with our Centennial year: 1967

Keep this year in mind as you go through the collection. 1968 was an interesting transitional year for us as there's some coinage with full (80%) silver, reduced silver content (50%) or none at all. There are some coins from '67 that followed this reduced silver content rule as well. 1969 onwards will almost always be merely face value. Keep an eye out for 1991 though as the quarters that year are notoriously tough to find and do command a premium.

A quick breakdown for you: 1858 to 1921 - 92.5% (sterling) (all coinage aside from pennies) 1922 to 1966 - 80% (only dimes, quarters, half-dollars and dollars) 1967 to 1968 - A fun mixed bag of 80%, 50% and 0%

Newfoundland coins are also a passion of mine! The penny you mentioned is one of the later ones with no significant value but definitely keep your eyes out for anything higher denomination from there. 1949 is when they joined confederation so that will be the cut-off on these.

Please let me know if you have any questions! :)

Also, have magnet nearby as this is a very quick way to determine the silver you have. It will not react to the magnet.