I note that this coin comes with two bust varieties: (a) BMC 94-95, with a laureate head, right, and (b) BMC 96-97, with a laureate bust, right, with drapery on left shoulder, front and back. I think @galba68 's is type (a) and @Andres2 's is type (b).
The British Museum site's search function was down yesterday and I couldn't get the images needed. Here are the two bust types: (a) Head of Trajan, laureate, right, BMC 94: (b) Head of Trajan, laureate, right, with drapery on left shoulder, front and back., BMC 96: