Generation IV Internal Engine - is this an individual LS3 engine block number (pic)

Can anyone tell me for sure if this number that is stamped on the passengers side of the block, in front of the motor mount and behind the alternator (upper left of this photo), is an identifying number for this individual block, or is this same number stamped on all LS3's?
Thanks,

http://i110.photobucket.com/albums/n112/steve671/1969%20Camaro/IMG_0017-1.jpg

Ill go check my car, brb

Cant get a look at that location with motor installed. It's obscured by the head, and wiring harness/lines. Sorry, maybe someone else has a motor outside a car

Cant get a look at that location with motor installed. It's obscured by the head, and wiring harness/lines. Sorry, maybe someone else has a motor outside a car

Thanks for checking, I appreciate it.
Anyone else have one on a stand they can check for me?