Please help with this baseball
 

Anyone familiar or know what these numbers and letter written on the back of the signed baseballs mean? Any help would be appreciated. Thank you
https://ibb.co/wM2nbtR

https://ibb.co/48WVLy2

https://ibb.co/583QRYW

https://ibb.co/583QRYW

I hope the photos uploaded.

RL73? or R473?
33169?

Both of these seem to have some non-alphanumeric at the end, looks like an M but could be two letters together (like initials) or just some sort of shape.

No answers, just something in case it helps others who are looking.

My guess is some sort of inventory tracking system.