Gold & Silver Coins Investment

By law banks cannot insure the contents of a safe deposit box so do you have additional insurance for it? The vaults could be searched by government without the need to notify owners.

Brief discussion on Gold and Silver coins as a viable investment

Article 1, Section 8:
The Congress shall have Power . . . To coin Money, regulate the Value thereof, and of foreign Coin . . . ; To provide for the Punishment of counterfeiting the Securities and current Coin of the United States . . . .

Article 1, Section 10:
No State shall . . . coin Money; emit Bills of Credit; make any Thing but gold and silver Coin a Tender in Payment of Debts....