The UT SQ's had die breaks and die cracks all over the reverse, particularly where it involved the trains. I don't see any indication that the rim is cracked or broken, so I'm guessing that it is a die break. Chris
I don't see any separation from the rim, looks like a cud to me. So this is where I need to get more education on the finer points of a cud.
There isn't a separation anywhere across the rim either. That's why I don't think it is a cud. Who knows! I could be wrong. Chris