Examples from the Web for b4
Historical Examples of b4
The coefficient of this glyph is very clearly 4, thus confirming our identification of B4 as 12 Imix.
The uinal and kin glyphs have been crowded together into one glyph-block, B4, the uinal appearing in B4a and the kin in B4b.
Although the glyph in B4 is too much effaced to read, we are justified in assuming that it is the head variant of the katun sign.
The uinal head with its characteristic mouth curl appears in B4.
B - B4, the latter move enabling White to queen the pawn with a check.