The Canadian Platinum Maple Leaf coin has a unique history with the Royal Canadian Mint. When the coins were introduced in 1988, RCM offered the min four different weights ranging from the 1 oz coin to three fractional weights of oz, oz, and 1/10 oz. By 1993, a 1/20 oz weight had been added. In 1994 only, the mint also issued a 1/15 oz coin.
Initial production of the coins ceased in 2002 amidst lackluster demand for platinum coins and falling prices for platinum. However, in 2009 the Royal Canadian Mint reintroduced the Platinum Maple Leaf with only a 1 oz weight available, which continues as the standard issue for this coin..
For the 1990-2002 issued Platinum Maple Leaf coins, Dora de Pedery-Hunts third-generation effigy of the Queen appears on the coin. This design by the Canadian designer reflects the Queen at age 64. Finally, any Platinum Maple Leaf from 2009-onward has the fourth-generation image created in 2003 by Susanna Blunt. This captures Her Majesty as a 79-year-old woman.