Aynsley Imari - Teapot, Cream Pitcher and Sugar Bowl

I inherited this pretty little teapot, cream and sugar set from my grandmother. It's Aynsley, but all I can find online is Imari 5500. Can anyone give me a pattern name and vintage?

Also, the inside rims of the sugar bowl and teapot are chipped quite badly. The creamer is in good condition. Does that render the set strictly decorative, or of sentimental value only?