I have an old coin collection. Where can I find a reputable dealer to sell them?

I have several old silver dollars, 50 cent pieces, old dimes some paper 1$ bills and other pieces from carribbean etc. I have looked up online and it appears that some are worth a good sum of money. Where can I go to get a decent appraisal in the Toronto area? and possibly sell. hopefully sell them.

I hope this helps.

Old Coin collection