22.21. For the purposes of this section and sections 22.22 to 22.24,“permit imprint” means an indicia the use of which as evidence of the payment of postage exclusively by a person is authorized under an agreement between the Canada Post Corporation and the person, but does not include a postage meter impression or any “business reply” indicia or item bearing that indicia;
“postage stamp” means a stamp authorized by the Canada Post Corporation for use as evidence of the payment of postage, but does not include a postage meter impression, a permit imprint or any “business reply” indicia or item bearing that indicia.