The 3¢ small queen has quite a few varieties which are worth more, but the basic one is worth about 50¢. There are different shades which will bring your value up, but the most expensive one (excluding any plate flaws, plate positions, error stamps etc. That I don't know about) is the either mo tidal or ottawa printing (my catalog is contradicting itself on which it is). That one is worth several hundred. The easiest way to find out which one you have would be to go to your library and check out their stamp catalogs for canadian stamps. The one thing you would probably have to get is a perforation gauge, to measure the perforations to determine which stamp it is. One thing about catalogs, though- the prices listed are not what you would get if you sold it. You would probably get between 10% and 40% of the catalog prices, and if it was the most common variety I doubt you could find someone to purchase it. If that's the case, it would be best just to keep it as an interesting heirloom of 140 years ago.
It is worth 1 cent.
One cent
one cent.
One cent.
1 cent Canadian
one cent.
It's worth one cent.
one cent each
It's worth one cent in Canada.
5 cents
It's worth one cent, though the penny has since been discontinued in Canada.
These are 15-cent stamps -- still good for 15 cents postage.