Okay, I'll eat a little crow...but just a little.
You maybe right about your situation being unique, I suppose.
I like to try and not pass on misinformation here, if I can help it or aware of it... or if sometimes I am ignorant about some info and details.
I talked with two separate Apple reps. One who was a retail software sales rep, the other I was transferred to was a technical support rep. I spent about 30 minutes talking with these reps.
Very professional and knowledgeable employees, by the way.
Both of them said that the replacement discs are Mac computer specific and that ther would be no way to obtain 10.5 Leopard replacement discs with any PowerMac G5. Tiger OS X 10.4 discs yes, but not OS X 10.5.
So, they had no explanation as to how someone would have obtained these for their G5 model.
The software sales teams are only authorized to ship replacement OS X system discs that originally were installed and shipped when the Mac model was brand new.
I needed to know this as I had 4-5 other posted threads about upgrading to OS X 10.5 Leopard and all of them reported that they couldn't get these discs any longer in any form from Apple.
Something I had been very aware of for quite awhile.
Your case seems to be an exception.
Glad you were able to obtain these, but others may not be as lucky to get these as you had.
I Wish Apple would just let people who still need OS X Tiger or Leopard still obtain these cheaply.
The rep you had must have been feeling in a charitable mood that day.
So, sorry if the way my post was worded came of as sounding really angry or irate.
It was more like slightly annoyed.
😉