The first photo shows Mary crowning the emperor, who holds the cross on his right.
The second photo shows Christ enthroned.
This combination is typical of the hyperperons of John II and John III.
I am not sure we can see enough of the inscriptions to be sure which type. My guess would be John III, Sear 2073, like this one: https://www.acsearch.info/search.html?id=8080370
Byzantine regal issues were also copied in nearby countries, and I don;t know if this is a real coin or an imitation.