Is this XH or SVC Grade Cast Iron Pipe?

[Flip]

Can anyone identify the cast iron drain piping in the photos below? I'm trying to determine if they are "Service Grade", or "Extra Heavy" grade. I need to replace the lead pipe, and as I understand it, XH vs SVC will make a big difference in my course of action. I cannot see any markings on the pipe at any point which indicate which type it is. The "T" junction pictured has "3859" on the side. Thank you for looking.


SVC or XH Cast Iron (?):

 

[johnjh2o]

Look on the hub. If it's extra heavy there will be a XH on the hub.

John

 

[Flip]

Nothing on any of the hubs, I'm certain of that. Does a complete lack of markings indicate SV Weight? Thank you!