This stamp has a hidden date in the water underneath the loon's tail.
The designer's initials are situated perfectly in the bottom-left corner of the stamp. The initials LH belongs to Laurence Hyde.
The new 5¢ postage stamp will illustrate the Loon, a bird well known on Canada's many lakes. The stamp was designed by Laurence Hyde of Montreal. By issuing this postage stamp, the Post Office Department wishes to assist those private, provincial and federal Government Agencies striving to increase interest in the importance of securing and restoring the wildlife resources of Canada. These resources are of considerable economic value, and a constant source of pleasure to thousands in every walk of life.