Those are turning gouges - they've got no bolsters.
Edit to add - I'm not an expert on turning, but judging by the shallow bevels at the business ends, I think they were last used for either green wood turning or on a treadle-powered lathe. Might be worth posting on the 'Wood Turning' board for a better-informed opinion.
Thanks everyone for your comments, interesting that they may have been intended for green turning. I’ve thought about fitting handles and using them on my lathe, but undecided at present.
Originated from one of my g/f’s tool chests, wrapped in a heavy waxed paper, who was in carpentry trade early century, so imagine these may not have come to him new, I assume there are late 1800s, but I stand to be corrected.
Does any one know if the various Sorby firms were all related to the same family, Issac, Robert, I&H or which order they appeared in?