[ramram]

They are likely tintype or ambrotypes. You can carefully pull them out of their case and look. If the image is on a piece of blackened tin, it is a tintype. If the image is on a piece of glass, it is an ambrotype. An ambrotype will also have a black background of some sort behind the image as the image on the glass is a negative. For what its worth, it should also be noted that tintypes and ambrotypes are reverse images (left is right and right is left).

The images of the children probably are not worth much at all, as common images like these are widely available. If the image is particularly appealing (tones, contrast, clarity, etc.) it can have greater value though. A nice case can sometimes have value as well (your second image has a hard thermoplastice case and, if in nice condition, would have some value). You will also often find post-mortem of children of this time period. Gruesome but collectible to some and worth more. Many children died young and never had an image taken in their short life so parents would have a final photo taken before burial.

Your third image appears to be a civil war soldier in a "sack" coat. Would be more valuable if he had a weapon but still carries maybe a $40 - $70 value I'd guess. Sometimes these soldiers are identified on the back inside of the case. This would add value as well.

Rob M.