Well the body looks like a '53-'54 Chevy but the trim is Pontiac and knowing that Canadian GM cars were often "cross badged" versions of US stuff that makes sense. So if it's not a '54 Pontiac then it has to be a '53 unless Canadian GM cars were a year behind the US in styling changes making it a '55. Since it doesn't cost anything to try other than a little embarassment I'm going out on a limb here and guessing '55 just because '54 was ruled out and '53 is too obvious. Doesn't look anything like a US built '55 GM though.
Oh yeah, at $2200 (Canadian I assume) somebody better jump all over that if it's half as good as it looks.