Vintage rare unmarked hand painted tea cup

Vintage rare unmarked hand painted tea cupI cannot find another tea cup with this pattern using AI photo identificationAll tea cups posted on my site belonged to my grandmother’s collection. They have been boxed and stored for 30 years indoors. She only collected the best in her day. No cracks or chipsSee photos for details since they are part of the description flawless for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.