William Lawrence Sr. Omnibit 6-29-17 The purest gold ever produced was by the Perth Mint in 1957. It was 999.999 percent gold. William Lawrence Sr. Omnibit 6-29-17 Share this:PrintFacebookTwitterTelegramMeWeWhatsAppPinterestLinkedInParlerGabRedditEmailMorePocketTumblrLike this:Like Loading... Related