Vintage and from the same estate sale.  Gotta love these old GRAVITY LOCK pocket knives.  Harder to find than other lock types.
 
Cream colored mother of pearl handle pocket knife.  
 
Condition:  Handle has no cracks or chips.  The blade has no chips or cracks.  THE GRAVITY LOCK WORKS PERFECTLY.
 
3 1/8" when closed.  The blade is 2" long.
 
Location E2