Vtg Military First Aid Kit Metal Box WWII Leather Handle Webbing Medic 945A

HIstory of this (empty) box is unknown.
Found at an estate sale with other military items from WWII - Vietnam era.
I do know this box was repurposed for use as a first aid kit. There were two partial contact lists inside that lead me to believe this was used in a local business. The contents inside (not included) were from the early-mid 60's.

The webbing and handle appear original to the box.
The paint job does not appear to be original/professional.
Unless a field paint job to appear as a medic? Just do not have enough information.
The previous owner possibly stripped the original paint and repainted it orange/white.
They also possibly plugged a hole at the top inside (shown last photo). Possible a hole for electrical?
The previous owner served and their name is on the case.

Case is appx. 15" wide x 12" tall x 4 1/2 deep.
Has discoloration, scratches, staining, medicine smell and other signs of wear.
We quickly cleaned it but it needs a deeper cleaning.