2001 Premium Proof Set with Hologram SML. Canada 2001 Royal Canadian Mint Premium Proof Set with reverse proof hologram 2001 silver maple leaf. Only 3000 of these premium proof sets were issued by the Royal Canadian Mint to contain the 2001 Canadian silver maple leaf coin. This set includes the reverse proof hologram 2001 silver maple leaf. The penny and loon are full proof in copper and aureate. The special case was prepared only for this issue. Slight inconsistencies in the quality of the hologram surface are normal for coins struck with this special process.