Windmill and Double Dutch - Imperial
Both the Windmill pattern and the Double Dutch pattern are shown in old Imperial catalogs as mold #514 and thus they were part of the same line and should be considered the same pattern. While pieces commonly referred to as Windmill have only one windmill in each scene and Double Dutch has two, each scene of all the Windmill pieces are unique. Windmill bowls are collar based while Double Dutch pieces have three feet. Windmill bowls come in a large size, a standard size and a small sauce. At left is a typical ruffled standard sized bowl in purple. In the center is a large sized bowl which is often incorrectly called the variant pattern as it includes birds to the right of the windmill. The large bowl has other differences in the design, so birds were not simply added to the standard bowl. The photo on the right shows the typical exterior rib pattern of the Windmill bowls and the oval trays shown below.

The large bowl has 42 scallops along the top edge, is about 8 to 9 inches across the top depending if it is ruffled or round and has a 3 1/4 inch base. The standard size bowl also has 42 scallops along the top edge, is about 7 to 8 inches across the top and has a 3 inch base.

The large bowls are found mostly in amethyst and occasionally in smoke. The standard sized bowls are also found mostly in amethyst with marigold, green and smoke also found. Standard sized bowls in lime green, marigold on moonstone, teal and vaseline are more difficult to find.
The Windmill pattern also comes in small sauce bowls about 5 inches across that are found either ruffled or round. They have a similar but different design than the larger bowls as can be seen in this drawing in the center. They also have collar bases and a ribbed exterior. There are 33 scallops along the top edge. Sauces are mostly found in amethyst but other colors include amber, clambroth, green, marigold, smoke and violet blue. In an old Imperial catalog a round berry bowl was listed as item #5145A.
The Windmill pattern also is found in an oval tray shape. If the oval piece is flat, it is referred to as a dresser tray as shown in amethyst on the left. If the oval piece is ruffled or cupped up, it is referred to as a pickle dish as shown in the green ruffled example in the center and the marigold cupped to the right. These oval pieces have collar bases, a ribbed back and a scalloped edge. Dresser trays are found in amethyst, green and marigold. Pickle dishes are found in these colors and to a lesser extent in lavender, smoke and teal.
There are three different sizes of pitchers: The smallest is the milk pitcher at 6 1/4 inches tall. The midsize pitcher and the full size water pitcher are both 8 inches tall. The midsize pitcher has a smaller circumference and a smaller lip than the full size pitcher. Water sets, which include 6 tumblers, can be found with either the midsize or the full size pitcher.

Milk pitchers are easily found in amethyst, green, marigold and smoke. Milk pitchers in lime green and vaseline would be rare. The smaller standard size pitcher is hard to find in any color but green, lime green, marigold, smoke and vaseline are known. The full size standard pitcher is also hard to find but have been sold in amethyst, marigold, smoke or violet blue.

Windmill bowls, pickle dishes, and water sets were reproduced.
Double Dutch, pictured above, has two windmills and a fisherman in a boat. Double Dutch bowls have three feet and the Floral and Optic exterior. The round flared bowl on the left is in purple. In the center, is a marigold spittoon whimsey made from a bowl. The catalog picture is from an old Imperial catalog and shows the mold number as #5141C. #514 is the line, the fourth digit is the size and the final letter is often the edge shaping.

Colors for Double Dutch include clambroth, green, marigold, purple and smoke.

The three panels around the large water pitcher.
The three panels around the small milk pitcher.

The three panels around the medium water pitcher.		 The large sized Windmill pitcher is 8 5/8 inches tall, has a circumference of 16 inches around, has a 3 1/2 inch collar base and has 19 scallops around the entire top rim.

The medium sized Windmill pitcher is 8 1/8 inches tall, has a circumference of 14 inches around, has a 3 1/4 inch collar base and has 17 scallops around the entire top rim.

The milk sized Windmill pitcher is 6 1/4 inches tall, has a circumference of 12 inches around, has a 2 5/8 inch collar base and has 15 scallops around the entire top rim.

Note that all the various panels depicting scenes of windmills and someone fishing are all different across all the different shapes found in the Windmill and Double Dutch patterns.