I'm sure I can come up with a receipt. I don't currently have one but I do know where they were purchased, it's just a matter of revisiting the website to see If I can come up with a purchase list.
Since I know for a fact they are real, any idea on a good price point for the lot? (Obviously I'd have to prove the legitimacy of these before I could officially sell)
EDIT: So far found where I bought the 5 OZ Silver bar from (SilverTowne). Retrieved an old account which led to a bill of sale. Still working on locating where I purchased the others.
EDIT EDIT: Found a bill of sale for the rest

Thanks!
- Alex