Picked up this 5x7 printing frame made by E. & H. T. Anthony & Co., Pat. Aug 12, 1880 on eBay. I was curious how the dial with the numbers 1-12 was actually used. Was it to record exposure time in seconds or minutes? As far as frames go, it's quite nice. Over an inch thick. When I received the frame there was this older 5x7 glass plate negative already installed. Upon viewing with a loupe I noticed the lady's hat, eyes, necklace, mouth, nose were all reworked by scratching off the emulsion to increase the contrast in those areas. Another thing I found interesting is that the stamp used to make the letter "E" in E. & H. T. Anthony & CO must have been broken or missing the top bar completely, and the letter "O" in "CO" is a backward "C" for some reason. The games people play. Ciao yall!