Board Thread:General Discussion/@comment-29849685-20161225231437/@comment-1038387-20170102214233

Tiny correction: it's not the number after oldid, but the one after diff (duh), as that's the current id.

For example, this just got me a lucky badge:

http://dc.wikia.com/index.php?title=File%3ADukeTLOWW.jpg&diff=1844000&oldid=1836892

It ends in 000.