Antique 18th century American Revolutionary War Rifleman Gun Powder Horn

Authentic antique 18th century, Revolutionary war period, American rifleman's powder horn, ca. 1770s-1780; made of a hollowed-out brown horn, with domed oval wood base secured with small black pins, and pierced with suspension hole, spout end carved with a rib.
 
CONDITION: In its original unattached condition with a superb mellow old patina.
 
MEASUREMENTS: The overall length is approximately: 32 cm (12 19/32 inches).
 
REFERENCES: For similar examples, please see
1)" Weapons of the American Revolution and accoutrements" by Warner Moore.
2) "Collector's Illustrated Encyclopedia of the American Revolution" by George C. Neumann.
 
We will also provide the buyer with photocopies of the pages from the mentioned references together with a certificate of authenticity.