I hadn’t seen paring chisels that weren’t bevel edged before, hence my confusion..
So it seems that it IS a chisel, not a turning tool.
Yes, it is a Sorby. That can be seen on the top surface of the blade, (though it’s not clear in the picture)
That’s what I was seeking confirmation of! ( I needed to know becasue the person who gave these and the lathe to me wants the chisels back, for sentimental reasons, but not the turning tools!
Thanks to all who read and commented.