Now that is silly. What good would that do without your home address, key to the front door, day and time your not home, location of the safe. Not sure why you would make it so difficult not furnishing all pertenant information. By the way access to your safe deposit box would also require a notorized note so please furnish this also. As to best coin in 10 years. I'm to old to worry about 10 years from now.
I am rather new at coin collecting but I would say my most valuable coin is worth $8 - $15 and it is a 1966 20 pence from down under. I hope to obtain a coin substantially more valuable than this within 10 years. Wish me luck!