http://ec2-13-58-222-16.us-east-2.compute.amazonaws.com/wiki/Attribution_101 There aren't too many for 1888 O. Check the top 50,also Hot 50, top 100, and then if you can't decide one might be and post it for us, the value is probably not worth the effort. IMO, Jim
From what i can tell maybe VAM 1B1? Appears to be an early die state of the scarface. I see the die crack at the dot between E and PLURIBUS and doesnt appear to extend towards the face.