This one is much easier - Rogers and Bro, American, Waterbury, Connecticut, 1847-1855 Hallmarks shown were used during these dates.
BUT... this doesn't match the dates given for the hallmarks, but this sure looks like the pattern.
1878 Laurel.
http://www.sterlingflatwarefashions.com/SPPatterns/11SPPLaurel.htmlMany patterns were duplicated over the years, but this site is pretty good about denoting those with multiple hallmarks. I can't find an earlier designation for this pattern.