THIS IS AN OLD CASE XX!  Right from an estate sale. 
 
CASE XX model 6333.  Made between 1940 to 1964.  
 
Condition:  Handle material has no cracks or chips.  Opens as it should.  No snap left.  Missing badge.  The very end of one of the blades is broke.  SEE PICTURES.
 
2.5" long when closed.  Double blade.
 
The handles look to be bone but could be delrin as well.
 
Location E2