Its a Springfield Grade. These came in 7 or 11 jewels (yours is 11). They are slow train (16,200 bph) and came in key or stem wind. An economical choice. I have a couple private labels in this grade and they are great runners.
I don't know about 1877, but probably within the first year or two. It was a popular grade, sometimes it seems like hours are spent just recording this grade in the observation sheet. It accounts for about 15 percent of my list from 1-500,000.
This is from the 1883 Hampden Material Catalog(Courtesy Harvard Library). It shows the various grades in normal Hampden production. The Springfield is on the bottom right