Up for bid is a very hard to find, unusual antique adding machine. Made by the Pangborn Calculator Company Grand Rapids Michigan, Patented March 5th 1907. I just bought this at a Central Kentucky estate auction. I have tried to research it and find out more about this item without much luck. But hopefully you experts out there will have more knowledge about this. I have tried to take lots of photos to show the condition and if you have any questions at all please ask and I will get back to you as soon as possible.it appears to be in good condition. The calculator measures 11 and 3/4 in. long, is 3 and 1/4 in. wide and 2 and 1/8 in. tall . It is in a wood case. The case has a few nicks but not bad. The winning bidder is to pay postage. Payment made me made by PayPal. Please check my feedback and bid with confidence. Thanks for looking!