Vintage and from the same estate sale.  Harder to find PROMO knife.  It has an original built in General Motors ignition key along with its standard knife blade.
 
Cream colored mother of pearl handle pocket knife.  
 
Condition:  Handle has no cracks or chips.  The blade has no chips or cracks.  Some signs of age on knife blade.  No snap left.
 
3" when closed.
 
Location E2