Hi
Can anyone here (who has the knowledge or experience) suggest to me what to do / if I can do in my case:
1. have 1oz Canadian Maple Gold Leaf Coins (these types)

2. Bought this almost 20 years ago but are MINT (ie kept in dry box safe) hence pristine looking
3. Have lost the purchase receipt. Bought from Spore OUB

Question: How do I sell them for cash - not that I want to now - but how and where is my question.

Many thanks 

how do they test the purity of the gold? i heard some gold is wrap with gold on the outer layer only, and metal inside. i am  just curious only...