Blue Danube Cup & Saucer With Rectangular Back Stamp, Set of 4

A lovely set of 4 Blue Onion cups and saucers from Blue Danube.  It has a rectangular back stamp.  The cup measures approximately  3 3/8" wide and 2 1/2" tall.  The saucer is about 5 1/2" in diameter.

Please review all pictures for additional details and measurements. It is free of chips or cracks, but due to age may have some visible imperfections such as minor scratches, trim wear, light staining, and/or minor crazing.