Nice new web site on the CJH site, called the Early New York Synagogue Archive (link). Contains some interesting archival material, including, for example, this bound collection of what are in effect copies of ketubbot from marriages performed in Congregation B'nai Jeshurun between 1826 and 1841.
Here is one example from this book, a marriage performed in 1827. The groom was named Israel Eliezer ben Gershon, and his bride was a convert named Sarah bat Avraham Avinu. Note also that the 200 zuz are also given as dolars ma'ot amerika, "Dollars, the currency of America."