Help me identify this brake drum

The inner bore is 2.25". Here is a rather dimly lit picture of the axle:

http://i207.photobucket.com/albums/...F-4599-4461-A4C5-D4FCC4EFBA35_zpsrfav9zmd.jpg

What are the markings on the axle end? Did the drum fit the hub correctly to to start with? What is the shoe width? Scrape the 5 black marks to see if that is just paint.