Yixing 1980's Zhini "Shui Pin" "Please Drink Chinese Oolong Tea" Chinese Teapot

Colour: Purple 
Period: 80's
Marks: "Chinese Import/ Export Cr-operation, FuJian Province Branch, Xia Men Branch "    mark on the bottom, Number on lip.
Size: #10: L: 12.5 cm, W: 7.9 cm, H: 7.1 cm,  
         #8: L: 11.8 cm, W: 7.3 cm, H: 6.4 cm
Capacity: #10: 150 ml (5.07 oz), 
                  #8: 100 ml (3.38 oz)
Spout: Single hole
Density (least 1 - most 10): 6.5
Suggested Teas: Ripe pu-erh tea, Aged raw pu-erh tea, Black tea and Oolong tea.
Condition: In good condition with some minor age-related imperfection. Lip slight loose.