Authentic Yixing Teapot order

Product Name: Authentic Yixing Teapot order
Comes with 6 cups and saucers. The box order is in pretty bad condition, but the pot and cups/saucers are fantastic. Purple clay. Based on my research I'm judging it to be made late 1980s to early 1990s. The box says Yixing Zisha as well as the marks on the bottom of the cups and saucers. The mark on the bottom of the teapot says Made by Jiang Xinman. There are Factory 1 stickers on most of the cups, but I cannot guarantee the authenticity. This is an adorable teapot and I know you will be happy with it!.