The item pictured is a Rörstrand Tango cup, designed by Marianne Westman for Rörstrand, Sweden, in 1953. Key details include:
Part of the Tango series, featuring stylized leaves in red, blue, and black on a white background.
Scandinavian design from the mid-20th century.
The cup is often paired with a blackmatching saucer.
The Rörstrand mark is stamped on the base.
It is a collectible item, often sought after for its mid-century modern aesthetic
Gifted by my Dutch aunt. I have 4 designs listed