Vintage and from the same estate sale out of Ohio.  1950's?
 
CHECK OUT THE BEAUTIFUL MARBLED CELLULOID SEMI TRANSPARENT SCALES!!
 
Two blade.  Made in the USA.  Unknown maker.
 
The scales have no chips and are in good shape.  Both blades open.  Light snap left on both blades.  The blades could use a polishing if wanted as they has some discolor.
 
3 1/8" long when closed.
 
Location E2