Roy, you have a good eye for noticing these types of things. Yes, I think those cardboard chips are Order of Owl chips, and should be listed with the Crest and Seal chips.

I just looked up the Wikipedia article on the group; https://en.wikipedia.org/wiki/Order_of_Owls

It mentions that O.O.O (with the dots and without the Owl) was a recognized trademark for the group (see below).