[callmejoe]

does anyone remember what post or image was associated with:

"4515 sb"?

[drymans wife]

I do remember when granny googled for it she came
across a good-bye conversation from a jihadi to his
mom.

[British chick]

"does anyone remember what post or image was associated with: 4515 sb?"

Yes, it was in the letter sent by the Abu-Hafs Al-Masri brigades to Al-quds al-arabi, amongst others shortly after the 3/11 Madrid train bombings.

[Velveeta]

It was in the al Masri statement after the 3/11 bombing in Spain.