That's close, but it was 3c.
I want to say it was blue and red, with a
"3" on each bottom corner, like that 2c...
Unlike the single color 3c with only one
"3" centered at the bottom.
Am I just frustrating the heck out of you folks?

I still haven't found that darn stamp again.
Anything I should know about the 10c CSA?