These were made at Fulper Pottery, thru research it's been determined that there are 3 distinct types of script during this time. The jugs change slightly with age, the lips seem to be the area that changed the most...
Harry I think these are hand thrown on a potters wheel you can see the horizontal concentric finger ridges around the pieces, along the vertical axis. I cant say I have ever seen such large jugs four gallons is big. epackage can you show pics of the handles?