Vintage 10K Gold Plated Enamel Insignia Chain Link Bracelet HAWA Mid Century

Vintage 10K Gold Plated Insignia Chain Link Bracelet. Mid Century. Insignia is the letters HAWA in enamel colors red, blue, yellow and white with 2 green bars. I don't know what it stands for. Measures 7" and has a spring ring clasp. In original box and in excellent condition.