The reverse went via two types. From 1840 to 1865 it featured the US heraldic eagle with just the country of issue and encounter worth engraved. From 1866 onward, the reverse had the national motto “In God We Have faith in” engraved over a banner above the eagle’s head. And https://jasperhmdtj.total-blog.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-buy-new-zealand-dollars-online-56005635