Without seeing images I can make a guess as to your thrift shop items. The Gerity items are probably serving pieces in an old 18th century Hanovarian style. They are still being made by Gerity. The other items are also silver plated pieces. The EP that appears on the Towle item stands for Electro Plate.
There is little resale value on these items. I suggest you check eBay completed auctions and you may find comperable items and their value.