It's a Lee Enfield No. 4 Mk. I* in .303 Britishicon. In that condition it'll fetch anywhere from $100 to $200 in the Canadianicon market, varying on location, time of year, and general mojo. If the numbers on the bolt match the numbers on the receiver it will fetch more.

It's not in original configuration, the wood has been cut down. The mental appears to be in great shape but judging by the wood I'm not sure it's unfired (unless of course someone had intended to make it into a hunting rifle but didn't get to finish the project). Depending on the condition of the barrel (if it's been cut or not) and the condition of the bore it might make a good candidate for restoration (buying a new set of wood for it).

If you want to leave it as is for sentimental reasons, you can get a good 'no gunsmithing' scope mount (drilling it will make it worth less) and use it for hunting.