Antique 18th century American Revolutionary War Rifleman Gun Powder Horn

Antique 18th century, Revolutionary war period, American rifleman's powder horn, ca. 1770-1780; made of a hollowed-out cow horn, with oval wood base secured with small wood pins ended with carved nozzle wrapped in thread.
 
CONDITION: In its original condition with a superb mellow old patina, an old crack in the nozzle. Please see the photos as they are a part of the description.
 
MEASUREMENTS: The overall length is approximately: 22 cm (8.66 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.