Colbalt Blue Glass Salt and Pepper Shakers 1930s Frank Tea and Spice Vintage

1930s cobalt blue glass salt and pepper shakers. This vintage set has partial labels - the Pepper shaker label is more complete than the Salt label. The salt shaker label is mostly missing and part of what is left is hanging loose. The pepper label is missing a small section (see all photos) The labels do indicate that the set was from the First Prize Brand, Tolerton and Warfield Co. Distributers, Sioux City Iowa. The glass jars were made by the Frank Tea and Spice company. The metal screw on lids have corrosion on exterior and interior. Each shaker is 5.5" tall. I have only lightly cleaned them in order to try and avoid damaging any more of the labels