Good morning and welcome to the Maples forum. I think some more mature leaf photos will help members ID this for you. Initially I was thinking of Coral Pink. Others may have different ideas. But it does have coral bark which pointed me in that direction. With thousands of cultivars now around, it is difficult to pin down a name, once a tag is lost.
Maybe 'Shirazz' ? Doesn't look as healthy as it could be though, so it just might be something else...