Redbob, on the contrary, depending on much you had to pay for it, you have a nice specimen of the British. can you post a photo of yours. have you check the studs for a month/years stamp?
Is yours fuzed externally or have a nose plug? Have you removed the plug to check for the No. 2 percussion fuze and burster? Below is an excerpt from Jack Bell's book on Heavy Artillery in the Armstrong chapter. This accounts for the studded projectiles on display at West Point:
Regards,
John
"Confederate agents in London purchased a 10-inch and two 8-inch Armstrong rifles
ARMSTRONG 121
and projectiles for the CSS Stonewall, a formidable ironclad ram built in France.10 Because
of various embargoes, the Stonewall left Spain only on March 24, 1865, and got only as
far as Havana by the end of the war.11 The Cuban government turned the Stonewall over
the U.S. government in November 1865. The Stonewall was also armed with one 10-inch
(300-pounder) Armstrong rifle and two 8-inch (150-pounder) Armstrong rifles.12 Based
on projectile documentation, the Stonewall may also have been armed with one or more
6.4-inch Armstrong rifles.
On board the Stonewall were the best types of Armstrong’s projectiles. These are
documented in this book. Had the Stonewall reached the western Atlantic before the war
ended, it could have had a devastating impact on both the blockading fleet and the
Monitor-type gunboats. As fate would have it, the Stonewall arrived in Havana for refueling
after the war ended."