This salt is charted by the Neals as the SC-3 and is listed as rare . It is only found in clear. The Neals thought its place of manufacture was either the Boston and Sandwich glass works or the New England Glass Company. The design is again Masonic in nature as the tree of life is depicted on it. Tumblers handed down from one of the founders of the Baltimore Flint Glass show a very similar design to good to dismiss as just conjecture. There is a good chance that the SC-3 salt along with the SC-1,SC-2 and the SC-3 were manufactured at the Baltimore Flint glass works. A Flint glass works bread and butter were pressed and cut glass items.
The SC-7 salt is Clear in color and is charted as Scarce by the Neals. This salt dish was manufactured at the Providence Flint Glass Company between 1831 and 1835. This small factory made unique salts never borrowing or copying designs from other competing flint glass works or factories.