Brewers jersey codes

[Hitman Hart]

Ok, the search feature for the board keeps giving me a 502 error, so I can't seem to find the answer.

What do the codes on the GU jerseys mean? My Hart has a 3184 code. Can anyone shed some light on this?

[Trublubrucru]

Equipment manager's stock/reference number

[Hitman Hart]

Awesome. Thanks.