This officer has regiment number and Battery letter on his hat, etc.
Here is an interesting image, not rare, but a nice view of some things you don’t see as commonly. This pencil ID’d cdv, that is hard to read, with a possible last name of “Randolph.”
This officer sits relaxed in studio, holding his slouch hat with both regimental number and battery letter affixed, and is wearing corduroy trousers without officer’s welt stripes. He also wears a shell jacket, possibly altered from a frock.
No photographer information. In very good condition.