I was quite astonished by the variety of obverses for this type, as I only knew a few.
And major differences in design, including the ones from the same ruler.
Yours looks like COnstantine is a child holding a puppet horse
and yes, it is beautiful.
On mine I cannot unlook what I saw for the first time, a child holding a toy.
Another interesting type, I am sure you know all of them, is the one with the Chi-Ro on the shield.