I have this 1884 O in BU that has this identical mark on the reverse! What is this? Is there a 1884 O VAM that has this? I am to lazy to take pics, maybe later. :goof: http://www.vamworld.com/file/view/1887_vam12_rev2.jpg The problem is that is a 1887 vam. :bigeyes:
It also has a nice die crack through the right wing from D to S. (D from United and S from States) The mintmark is tilted left also. :rolling:
Now that I look I also have a 1887 and a 1904-O with the same marks. Sorry for my over excitement. Back to my VAM search I guess.