I think I was able to find the copy photograph at the Wisconsin Historical Society here (is Majorie Allesi familiar to you?):
https://www.wisconsinhistory.org/Records/Image/IM41960
Also in case you were wondering, if you were able to find the original tintype, I think it could easily be worth at least $10,000 today. Might be worth insuring for whoever owns it at the moment.
Marjorie was my mother, now deceased. It was in my possession for many years. I made a move and at that time felt it should be donated to a Wisconsin repository that could preserve it for history and posterity. I gave her the address to send and contact person I had talked to. I am not even going to go into what happened to it. I know where it actually went, have tried to get it back to no avail. I have had a concern it was or will try to be sold. So unhappy about it! If the original can be acquired, perhaps under a microscope if there are the red corp badges would help some to date it. I have researched him, his company, Grant County grays, company C 2nd Wisc his family for decades, was enthralled by my grandmother's oral history. There is an interesting series of letters from Calvin M Brooks Co C 2nd posted on
www.secondwi.com which references a picture he sent his sister and not by name the 6 men in it, their status, references to one standing and pointing , so I think possibly at least one other ( Calvin) bought the same picture wherever it was taken to send to family( he only remains and is clearly depressed and discouraged) that part of the excerpt: "
"In Camp of the 2nd Wis. near Kelly's Ford, Va.
I hav got back to my Reg. once more after an absence of nearly six months.
I hav not heard from you in so long a time that I hav realy forgoten when it was. I hav ben on the mov so much that I supose your letters hav not reached me.
Warren has enlisted. I do not know what he could be thinking a bout but probaly he was in rather hard circumstances. I do not think he will stand it very long in the field. it has interfeard with my plans very much but I shal soon make new ones.
two of my comrads hav died. [
The following description must refer to a photograph that he sent her of himself and his buddies] the one that is siting down with me and the corpral that is pointing off in the picture. one is badly wounded in hospital. one is discharged. one is a prisoner in Richmond and I alone am left in the Reg. [
He is the only one of the buddies in the picture who is left in the unit.] yet we as a body hav ben more fortunate than the rest of the Reg. will evrage [
average]. we hav not quite six months longer to stay in. [
They all enlisted as a group.] ALSO. Phillander ( Philo) Wright; 2nd wisc colorguard at Gettysburg has written an account of being in a house or barn immediatelly after the opening battle and behind enemy lines describing SGT Train's serious wounds, etc. What really fries me is that in his records after he dies there in August the cost of a lost cartridge box durng battle is subtracted from his pay