Here is the Notice announcing the "death" of the penny:
Mourning Covers and Stationary
Dating back to the 19th century in Canada, mourning covers contained the announcement of a person's death and information about funeral arrangements, or were used to send sympathy thank you cards. Mourning covers and stationery are easily identified by their black borders. Commonly used in the late 19th and early 20th centuries, mourning covers are rarely seen after the 1950s.
In this posting, mourning covers from Canada, Great Britain, and the Netherlands are shown.
Canadian Mourning Covers
Welland to Farmington, Michigan, May 2, 1860
Windsor N.S. to Lee, Kent, England, July 16, 1868
Halifax to Guysboro, July 4, 1889
Elora to York, September 4, 1874
Queen Victoria Mourning Covers
Toronto to India, March 1, 1901
Halifax to San Franciso, January 20, 1901
Hamilton local letter, February 27, 1906
Montreal, local letter December 29, 1908
Mourning Cover with Death Notice
Toronto-St. Mary's-London R.P.O. to Cayuga, October 19, 1908
Toronto to Tillsonburg, May 16, 1930
London to Hamilton, November 2, 1932
Governor-General of Canada (Assistant-Secretary)
Quebec to Prince Albert, August 1, 1936
Sympathy Thank You Card
Stratford to Vittoria, May 7, 1941
Ottawa to Toronto, November 2, 1944
Toronto, local letter, February 5, 1952
Great Britain
Southampton to Breaking Ridge, New Jersey, October 9, 1941
Death of King George VI : Sympathy Thank You Letters
From Queen Mary
Queen Mary was the mother of the late King George VI.
Marlborough House, London to Tasmania, February 21, 1952
From Queen Elizabeth, the Queen Mother
Queen Elizabeth, the Queen Mother, was the widow of King George VI.
Buckingham Palace, March 15, 1952
Netherlands
Leerdam, December 17, 1939
The announcement folded into an envelope
Leerdbroek, September 30, 1943
Eindhoven, February 19, 1941