The second discovery in 1972 found about 20 pieces of bones, appeared to be parts of the skull. The largest piece is about 3 X 5 centimeters.The relic used to be displayed in a plain plastic case
The Buddha's relic in Bangkok,Thailand.
Asoka and the Buddha-Relics,By T.W. Rhys Davids.Journal of the Royal Asiatic Society1901, pp. 397-410.
The Book of the Great Decease (Maha-parinibbana-Sutta ).
THE TRADITION ABOUT THE CORPOREAL RELICS OF BUDDHA,BY J. F. FLEET, I.C.S. (RETD.)Journal of the Royal Asiatic Society of Great Britain and Ireland for 1907,p. 341-363).