Optic and Buttons - Imperial
Optic and Buttons ia an Imperial pattern and appears in old Imperial catalogs with a mold number of 582. In crystal, Imperial made this pattern in many other shapes including table sets, vases and tumblers. So there is the possibility of finding additional carnival glass shapes other than those discussed below.

Optic and Buttons has a series of narrow flutes topped by a band of small, hexagonal buttons. Known mainly in clambroth and marigold, a rare smoke piece may be found. Many pieces of Optics and Buttons have the Imperial Iron Cross mark.

Above shows a small rosebowl, a small berry bowl and a ruffled bowl, all probably made from the same mold. The final photo above is a round flared bowl which comes 6 1/2, 7 1/2 and 8 1/2 inches across. The rosebowl is probably the most frequently seen shape in Optics and Buttons.

To the right is a true cup and saucer as the saucer has an inset ring where the cup will sit. while the cup and saucer set is quite rare. Another rare piece is the small two handled salt shown to the left. It is thought that there is a larger master salt available in carnival glass that would match this small salt.

To the left is a two handled bowl. Including the handles it is 12 inches across.

To the right is another type of bowl. It has a flat ground bottom without a collar base, is round and flares out as it goes up the sides. It is 8 inches across and 3 inches tall. Old catalogs called this a salad bowl and it was sold with the 10 1/2 inch chop plate as a salad set. A 5 inch bowl of this shape sits on the 7 1/2 inch plate and was known as a mayonnaise set.
To the left are three plates in marigold and clambroth. The sizes of the plates are 5 1/2 inch, 7 1/2 inch and 10 1/2 inch. Old price guides indicate the existence of a nine inch plate. Each of the plates has a center inset ring which suggests that they are all underplates. From old catalogs, it is known that the cup sits on the 5 1/2 inch saucer, a mayonnaise bowl sits on the 7 1/2 inch plate and a salad bowl sits on the 10 1/2 inch plate.

To the right is a milk pitcher in Optic and Butttons. These pitchers are only 7 1/2 inches tall and are quite rare.
To the left are three stemmed pieces. The one on the left is called a goblet and is 6 inches tall. The one in the center is shaped like a champagne flute but is often called a claret and it is 5 1/2 inches tall. The one to the right is a creamer and it is 4 1/2 inches tall. The stemmed creamer along with a stemmed sugar (not pictured) would make a breakfast set.
The two photos to the left show the salad set. The ad is from Imperial's catalog 10D. The smaller set is the mayonnaise set.