watercolor of blank postage stamp of square with perforated edges.

album art background blank boarder border clean clear clip collecting cute cutout decoration delivery design detail doodle drawing drawn edge edges email empty frame graphic gray greeting hand history illustration international isolated label mail mark message minimal mock monochrome object office old one outline paint pale paper pastel pay perforated philatelist philately post postage postal postcrossing postman receive rectangle retro send service shape simple single sketch square stamp stationary style template vintage watercolor watercolour white