this is a beautiful set of artifacts. have you dated the backmarks? ************* Hi,Thank you for your inquiry. As I stated, I'm not a military button collector. However, a CW collector from ebay emailed me the following:"Number three is a civil war period Georgia, and number ten is a post civil war state of Ohio. The following that you have pictured are civil war period: Number 1, 3, 4, 9, 12 and maybe 2".Hope this helps. Please email with any other questions, comments.Good luck if you decide to bid.