CS Shell Jacket Question

[Tkoind]

I've read that CS shells were made in a wide variety of configurations given their production by both large and local producers during the early part of the war. And that essentially even individual interpretation of patterns and rules led to some irregular jackets.

I have a question regarding a proposed CS shell jacket. I am looking at a Richmond type jacket with 6 piece body, 9 button shell in a very dark grey with solid black collar and cuffs (medical or militia?). We have not been able to authenticate this design for a jacket for either regular or militia use. Does anyone know of an example of something similar to this jacket? We would like it to be fairly authentic and would like to know if it sounds correct.

Thanks for your help.
TKOIND