HONG KONG. Dollar Full Obverse Brockage Mint Error, ND (1866-68). PCGS AU-55 Secure Holder Full 1st Strike Brockage.KM-10; Mars-C41. Full obverse brockage with partial collar strike.A spectacular and fascinating mint error that is nothing short of amazing. Worthy of the most sophisticated of collections.Attractive old cabinet toning.PCGS AU-55 Secure Holder Full 1st Strike Brockage.