Sorry for the late reply man. Ok as far as physical silver goes, if you’re in the US, your best pick is oldschool Junk silver. Quarters, dimes, half dollars are excellent! You can find 'em everywhere and these silver coins go for very very good prices. Avoid Morgan and Peace dollars. They are expensive! Also you can go with 1 oz bullions coins and rounds. Best 1 oz bullion coins are: Canadian Maple leaf ( recognised world wide ), US silver eagles, Australian Kookaburra’s and many more.
When it comes to gold, AVOID bars and 1oz bullions coins. There are too many fakes out there and also they are a huge pain in the ass to travel with. Therefor when it comes to gold, ONLY buy small non numismatic coins: British sovereigs, French, Belgian and Swiss 20fr gold coins, Dutch “gouden tientjes”, small gold eagles. These coins can be tossed inside your wallet together with small change and you can easily pass EVERY border crossing without arrousing the suspicion of the authorities.
You can download an android app called: Bullion Test and use the “ring test” to check the authenticity of your coins. Also on silver you can use the magnet method ( read online ). But in general Bullion Test is my GO-TO app for checking authenticity. If you have any other questions, please ask