I grabbed this forty dollar Terrier off of Ebay a week or two ago.
I've seen this pattern referred to as a physician's knife, I assume because of that flat bottom "pill crusher" type bolster.
I'm not so sure. it's only 2 7/8" long.
I'm just going to call it a curved jack.
Handle on the back side is cracked, sadly.
There are pits and patina on the blades.
I have only seen one other of these and it was a Robeson.
This Terrier dates 1910 to 1916, so it's already achieved a hundred - plus years of age.
Pattern number 015722. An identical Robeson would be numbered 722015