The mantra on the top is OM MANI PADME HUM. The 6 syllables are the famous mantra of Avalokiteshvara, which is sometimes explained as ”The jewel in the heart of the Lotus.” The first OM refers to Buddha’s body, speech & mind, as in possessing this oneself; the MA of MANI is a jewel or treasure, (wisdom/thinking). The NI of the MANI is the altruistic mind. PADMI is the lotus flower, the nature of reality of Buddha’s wisdom. HUM is the determination & resolution to acquire & retain these qualities.
The mantra, painted in gold, on each end of the box is OM AH HOM, which is the "Body~Speech~Mind" of Buddha, as in one's acquisition of these properties.
The sides have as the central theme acquiring wisdom as a practice and way of life: with flaming Cintamani set in the Mahamudra mists, and the accompaniment of camp flowers and Durva grass. Cintamani are wish-granting jewels and additionally represent wisdom. When depicted in sets of 3, they represent the body, speech and mind of Buddha such as the practitioner may possess. Cintamani are also referred to as the “Thinking Jewel” and symbolize the importance of teaching and as well as the enlightened mind. Pictured here are 6 flaming jewels. The billowing clouds or mist are Mahamudra: the union of compassion and wisdom -- the ultimate realization of one’s true nature. They are represented as the transformation of our vices into the 4 powers of regret, vow, reliance, and remedy, so the practitioner will realize purification and enlightenment. This is also the basic meaning of the "Heart Sutra." Intermixed with the Mahamudra mists are two mare's tail cumulus clouds which are quite common in Tibet. One significance of these fast moving clouds and the pure clarity of the sky is metaphorically an illustration of the Buddha Mind. Clouds may come and go across the heavens, like the transitory thoughts or delusions which appear to obscure the mind's true nature, yet the nature of the sky remains unchanged. this is like the mirror, which is always unaffected by the appearances which arise in it, the sky is clear, transparent, infinite and immaculate. Durva grass is a symbol of long life. Because grass is highly resilient, it is believed to be immortal. Therefore, it proclaims the end of samsara, the successive death and rebirth of all beings It usually takes a long time to overcome samsara, and a longer life span will allow greater progress in moving towards enlightenment within a given cycle.