The beveled glass is scratched.... I was going to go to you tube and see how to polish glass, but decided I better leave it alone. I do not know if this is a tin type, daguerreotype or a photograph. I think the mount is brass.
It measures aprox 2" high by 1 3/4" wide. The item "CIVIL WAR SOLDIER BROOCH Daguerreotype or Tin type" is in sale since Friday, November 20, 2015. This item is in the category "Collectibles\Militaria\Civil War (1861-65)\Original Period Items\Photographs". The seller is "trevco" and is located in Lake Elmo, Minnesota.This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, SG, to Switzerland, NO, SA, AE, QA, KW, BH, HR, MY, CL, CO, CR, DO, PA, TT, GT, SV, HN, JM.