I believe your coin is in the picture ... or at least close to it. Yours is dated 1843. This one is 1854 with a slightly different design.
New Brunswick minted these tokens -- half penny tokens and penny tokens -- in 1843 and 1854. All coins carry essentially the same value, so the discussion below applies.
average circulated: $100
well preserved: $300
fully uncirculated: $1000
Except for the stains, the coin in the picture is in decent shape. The details are sharp, which indicates not much wear, but the stains bring value down. I'd guess it would sell retail about $80 US dollars, and a coin dealer would pay about $40 for it. Without the stains, the value would be higher.