It would appear to be KM# 144.2. However you didn't mention the diameter, weight, or edge lettering. Also did you check to see if it is silver and it's purity.
You don't need so many pictures. Many graded coins have been cracked out of their slabs and resubmitted. If you believe it was graded improperly give it try.
The gold at Costco is a very good deal. If you have an executive membership you will earn 2% back. They only take Visa. Most either get cash back or airline miles. When I bought it was priced 40-60 dollars above spot. It was shipped UPS overnight. Price includes delivery. I also bought Canadian silver maple leafs. They looked like factory defects although they tested out fine.