A nice bi disc carved of light grey to white jade with some light inclusions, depicting the 8 trigrams of the I Ching on one side, with the traditional grain pattern on the reverse. Some very small chips around the rim from age.
Purchased on February 1, 1973 in Hong Kong.
Measuring 60.15 mm x 60.15 mm x 4.12 mm thick.
Weighing 32.3g with a density of 2.991g/cm.