Vintage and from an estate sale.  Only made for 2 years 1936-1937.
 
Great pearlescent brown scales.  Marked HAMMER BRAND USA.
 
Condition:  Great snap left at full open, half stop, and close.  Light signs of age only.  Some build up on the blade which should clean off.   It may have had a bail at one time.  See pictures.
 
2 1/4" including the loop when closed.  Double blade.
 
Location D2-24