9x19 "9mm CBC LO3 10" ID

I just got this ID request on a CBC made 9x19 with a hs that does not look commercial.
The “LO3” could stand for “lot 3”.
Anybody out there who knows who ordered this hs?

Alex, you can find information here: www.iaaforum.org/forum3/viewtopic.php?f=8&t=14975

Fede, thanks again, seems I missed this thread (or just forgot or ignored as I had not seen the hs before).