5 bowl set each with lid. Bowls are enamelled and are vintage from the 1980’s. 
Measurements with lid on:
1) 7.25” (18.5cm) diameter
2) 6.5” (16.5cm) diameter
3) 5.75” (14.5cm) diameter (this bowl does have a chip in the enamel at the rim)
4) 5” (12.5cm) diameter
5) 4.125” (10.5cm) diameter