There is no abbreviation mark after coh. The numeral has a long horizontal stroke above it and two parallel strokes running diagonally up to the right. A similar mark is found over i (numeral) in ChLA 455.1, probably as part of the phrase co]h(ors) i. The numeral should presumably be restored as vii[ii. We have no means of knowing whether this is part of an official document or a letter.