The majority of the Byzantine collectors nowadays, use Sear catalogue in order to achieve a fast identification of a coin.
Of course not all scholars always agree with the IDs given on the catalogue.
The coin under examination is for sure the one we call "Sear 282".
CNG has placed a question mark on Iustinus II name because scholars seem to reconsider which is the emperor.
Hahn in his new work MIBEC, calls this coin as "formerly attributed to Iustinianus" and now he assigns it to Iustinus II based on a few similarities he noticed between the A and stars of this coin and some other Iustinus II coins.
According to the above, you chose the emperor
Lately some good quality specimens have come to light which made it clear that the letter on the reverse is not
but some form of
as it is pictured on the lovely CNG specimen.