This is the famous and historically important tablet which Bishop Jaussen on Tahiti at the end of June 1869 received from natives of Easter Island who had converted to the Christian faith.

It was wrapped in a 16m-long skein of braided human hair.

The wood is from Podocarpus latifolius and possibly had earlier been part of the planking of a ship's boat (European or American).

Pictures (Barthel):

As can be seen there are 8 rows of glyphs on one side and 6 on the other, i.e. in all 14.

Both these numbers (8 and 6) are even and 14 = number of nights in two weeks.

Échancree is French and means 'notched'.