This enamel pin is part of the 'Pastel Lover' series, it represents a colour wheel.
SPECIFICATIONS:
- 3 x 2.6 cm (approx 1.2 x 1 inches)
- Hard enamel
- Gold plating
- Logo stamped in the back
- Pink rubber backings
Check this link to know more about Seconds (B grade) pins and my pin grading system.