PASS-CO Certificate of Authentication. The item “Republic of China 6% Secured $1000 Dollar Gold Loan 1919 PASS-CO Authentication” is in sale since Tuesday, May 8, 2018. This item is in the category “Coins & Paper Money\Stocks & Bonds, Scripophily\Government & War Bonds”. The seller is “nycbonds” and is located in Fair Haven, New Jersey. This item can be shipped worldwide.