Alan
Somewhere in my files I have a photo of Captain G. Gaston Otey's uniform jacket. If you will send me your e-mail I will get it to you. There is also a picture of Otey's jacket in William C. Davis' The Civil War. It is good to see interest in a lesser known battery. Otey's(Walker's) Battery was more or less an elite battery in the Confederate artillery service. Have you read Michael Cavanaugh's The Otey, Ringold, and Davidson Virginia Artillery?
Len