Hello, I'm new here and so apologize in advance for any protocol errors.

Several years ago someone gave me a physical 2011 series II Casascius btc. I now would like to sell it and am unsure of the best way.
I've seen a couple over the years on ebay as a collector's item. But I also know I could sell through an exchange.

So my questions are:

How do I sell safely on ebay if I choose that option? (I live in Canada which does present some problems with selling out of country)

Which exchange (and wallet) is the safest and you would recommend?

Thank you for any and all comments and your help.

Cheers.