Just purchased this one from a local dealer, who wasn't too sure what it was. Thanks to a (very old! 1977!) Charleton catalogue I have, I was able to enlighten him a little.

It's a privately issued token from Prince Edward Island, sometime in the 1840's or 1850's. Back in 1977, tokens were listed in Charleton.
Anybody have a slightly more modern reference for these "coins", with more information? All mine says is that the Speed the Plough/Success to the Fisheries tokens are listed as CH# 170, BR# 917 and have "hook" and "clevis" types, with several different varieties in each type. I assume "hook" and "clevis" refer to what appears on the right-hand tip of the plough, where it would attach to the draft animal. On that basis, I assume mine is a "hook".
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis