Identified CDV of Captain John A. Griffin, 90th Pennsylvania Infantry

Identified CDV of Captain John A. Griffin, 90th Pennsylvania Infantry – Mathew Brady Backmark
 
This is a nicely identified carte de visite of John A. Griffin of the 90th Pennsylvania Infantry. The CDV features a clear pencil inscription identifying the soldier and carries the highly desirable Mathew Brady backmark, one of the most prestigious and sought-after photographer imprints of the Civil War.
Service Summary:
Enlisted September 17, 1861, as a Private in Company H, 90th Pennsylvania Infantry
Promoted to 1st Sergeant
Promoted to 1st Lieutenant on January 1, 1863
Promoted to Captain on May 26, 1864 (not mustered)
Intra-regimental transfers: Company H → Company E → Company D
Mustered out November 26, 1864, at Fort DuShane, Virginia
Griffin served with the hard-fighting 90th Pennsylvania Infantry (Philadelphia Legion) through some of the war’s bloodiest campaigns, including Second Bull Run, Antietam, Fredericksburg, Gettysburg, the Wilderness, Spotsylvania, and Petersburg.
The combination of a clear identification, strong Brady studio backmark, and an officer who rose from Private to Captain makes this a very desirable CDV from a well-respected Pennsylvania regiment.