Sorry but have to post this as I bought a 10 oz silver bar awhile back from a person and it was fake, not enough people realize there are fake metal bars especially gold and silver. Not saying yours is fake but want people to do their research for any metal purchases.

http://www.silverdoctors.com/300-fake-perth-mint-gold-bars-discovered-in-australia-as-chinese-gold-forgery-factory-uncovered/

Chinese factory made many fake Perth 1 oz gold bars.