Limited Edition Porcelain Plates.
These plates were produced by Hutchenreuther in Germany. They are a part of the limited edition series by nature painter Ursula Band "Bouquets of the Seasons". 
The first plate displaying tulips is "Easter Bouquet" (Osterstrauß) and was produced in 1987. The second plate displaying large purple flowers is "Winter Twilight" (Herbstfarben) and was produced in1988. The third plate displaying daffodils is "Spring Morning" (Frühlingsmorgen) and was produced in 1987. The fourth plate displaying chrysanthemums is "Autumn Memories" (Herbstfarben) and was produced in 1988. The plates are 7 3/4" in diameter. 
All the plates are signed by the artist Ursula Band, and all are in excellent condition.