600 Baht - Rama IX Princess Galayani Vadhana

Princess Galayani Vadhana, the elder sister of Rama IX, was a respected academic and educator — not a figure routinely commemorated on Thai coinage. This 1995 issue marked her 72nd birthday, a particularly significant milestone in Thai numerological tradition, as 72 represents the completion of six twelve-year astrological cycles. The denomination of 600 Baht reflects that count directly: 72 multiplied by the auspicious number underlying the celebration.