Just a cool old object, and a very sharp one; one could do some damage with this. Made by CM Mallory of Albion, NY, with a 1889 patent date, it's a tool that would have been used for stretching rugs as they were being installed. (The sharp pins would grip the rug as one worked to pull it into place.) I'd just hang it on the wall from the handy hook at top--perhaps on the outside of a door as a means of saying Do Not Enter!
9 1/8" x 5 1/2" x 1". Nicely rusty one one side and with lots of dings and scapes to the wood on the other as there should be, but with more all of the metal points still in place and, really, super sharp.