Small folding fleam with horn scales. The item is marked Hunt Boston. This very diminutive tool has a spring steel loaded back that allows you to drop the retaining cuff down and rotate the blade 360 degrees. I am not certain this item had any use in the bloodletting field, it may very possibly be a gum lancet based on the size and the versatility of blade direction.
The "Hunt, Boston" marke was used by N.Hunt and Company from 1840-1855. The firm worked at 128 Washington Street, in Boston. They primarily manufactured Bowie knives and