Don't Put the Coins in Checked Bags. Above all else, don't keep gold and silver coins in your checked luggage. ...
Be Up-front. ...
Request a Private Screening. ...
Travel with the Receipt. ...
Watch Your Bag.
People Also Ask
So, if your gold coins are your personal belongings or you intend on gifting them to a loved one, you do not necessarily need to declare them. However, if you are planning on selling your gold coins in the UK, you will need to declare them.
As much as most people note that there is no limit to how much jewelry you can carry in the airplane jewelry, it is important to be aware that the jewelry will set off metal detectors.
Gold and Platinum are Not MagneticThe security system at airports is among other things looking for magnetic metals. You are more likely to set off the alarm wearing cheap costume jewelry, frequently made with magnetic metals, than fine gold and platinum jewelry.
United States: The United States allows travelers to carry unlimited quantities of gold coins, bullion, or other monetary instruments. However, if you carry more than $10,000 in value, you must declare it to the U.S. Customs and Border Protection (CBP) upon arrival or departure.
A dated copy of a jewelry appraisal, jewelry insurance policy or receipt can be used to prove ownership of the jewelry prior to your travels outside the United States. However, U.S. Customs and Border Protection (CBP) may accept a photo taken of you with the jewelry in your possession prior to your travels.