2015 20 dollars Fine Silver Iconic Comic Book Cover-Superman #28 

1 Oz coin

• Mintage: 10,000
• Composition: 99.99% pure silver
• Finish:proof
• Weight (g): 31.39
• Diameter (mm)38
• Edge: serrated
• Certificate: serialized
• Face value: 20 dollars
• Artist: Warner Bros. (reverse), Susanna Blunt (obverse)
• for more info visit: mint.ca