This series is circa 1947-52 and are all stamped in black "Made in Occupied Japan".  Each base is the exactly the same blue basket with three different types of fruit - strawberries, tomatoes, and lemons (I think).

The sets are about 3'' in height with typical corks of the period.

Occupied Japan strawberry condiment salt and pepper shakers

Strawberries

Occupied Japan tomato condiment salt and pepper shakers

Tomatoes

Occupied Japan lemon condiment salt and pepper shakers

Lemons