Bit hard to grade these, the presence or no, of mint lustre helps.
The arabic script is flat faced square above the fields with this design , so that makes it a bit harder to grade. Consequently, the leaves become a major point of focus when trying to grade. You have to look at the fields for minor digs and scratches and for picky things like minor rim bumps.
From the pictures, AU55 becomes a partial guesstimate.