150 Years of Postage Stamps 1990 Anniversary - Sesquicentennial Commemorative First Day Cover Postal Rectangle Singapore +
Year of the Horse 1990 1990 China Commemorative Festivals - Chinese New Year First Day Cover Rectangle Zodiac +
Philatelic Week 1990 1990 Arts & Crafts Commemorative First Day Cover Rectangle South Korea Stamp Week +
Art Series – Lithographs of 19th Century Singapore 1990 Arts & Crafts Commemorative First Day Cover Rectangle Singapore +