This stamp has a hidden date in the bottom-right corner.
The designer's initial is in the bottom-left corner of the picture of the beaver. The initial H belongs to designer Emanuel Otto Hahn.
The 5¢ stamp illustrating a beaver is being issued in support of Canada's National Wildlife Week with the intent that they emphasize to all the importance of securing and restoring the Wildlife Resources of Canada. This design was created by Emanuel Hahn, R.C.A., Toronto, Ontario.