Hello BL114, welcome to Stamp Community!
Stamps are graded as to value by their physical condition and their look or eye-appeal.
Important is the centering of the design within the whole stamp, including perforations (wiggly edges). The perfs are important also.
Your Canada 1c rose Queen Victoia, Scott Catalogue (or a better one Unitrade Specialized Catalogue of Canadian Stamps, shows varieties) #14, frpom the Canada First Cents issue, would be probably graded as VG or Very Good or even Good, which is below Fine and Very Fine in value.
Probably about $10 asking price
, maybe less.
A scan of the back is prefered, a check of the perforations to see which measurement it is, a cleaning in water, just soaking and then drying, no soap, would help the look of all the dirt around the edges. Water soaking will not hurt but help the stamp.
The bottom left corner might be bent, hard to see, the top left corner is missing.
The cancellatiion (cancel) or obliteration is light so the design below is visible. This helps the value.
If the back is damaged by a thin in the paper or a hole (possible at front of the Queen's tiara) then the price would drop again.
A reading of the front pages of the Unitrade or Scott as regards how a stamp is valued (at your locallibrary usually) is always recommended to halp you sell your stamps or value them. The more you know, the better off you are.
The other stamps, from the Queen Victoria Sma;; Queens issue, would also be graded at Good to Very Good, mostly because of the cantering being off. The 5c Grey possibly has a cut lower center so might be worth not much.
I like the strong colour on the 1c and 2c. On this whole issue there are many variations available as to different colors and different perfs varieties.
Becaue of the general centering and cancels and such I wouldn't value tehse as too expensive at all in today's market. Maybe a $1 or $2 each perhaps, depending on varieties.
But, checking around on here (SCF) and eBay
and other sites , besides confusing anyone with the naming of colours, especially between Stan;ey Gibbons of Great Britain and Scott's of the USA (which Unitreade uses under lisence) will give you a much better idea of what colours are what and counting the perfs shown, if you do not have a perf guage, and looking the the front and back, and selling them with some idea of the value of their looks (for example the nice colours of the 1c and 2c) will probably give you a better chance at acjeiving a better price realized.