Text J of the rongorongo corpus, also known as (London) reimiro 1, is the larger of two inscribed reimiro in London and one of two dozen surviving rongorongo texts.
A prototypical two-headed Rapanui reimiro, or ceremonial crescent-shaped gorget/epaulet, 73 × 13.2 cm, of unknown wood.
Two glyphs are cut into the top center of the front, between the two holes used to hang it.
The British Museum catalog states: A label on the back reads: Fischer says that the phrase "the master of a vessel" suggests that it was acquired before the Chilean slaving raids of 1862-63, probably during the 1820s to 1840s, the most active whaling period in the South Pacific.
It appears to be held by a human figure, glyph 530 , with what might be a headdress.