Numbers on support

[DoomRunner]

Found some numbers while crawling around under my 68 Road Runner. 1st pic is from passenger side wheel well looking at support just to show a better idea of location. Sequential numbers? Part numbers?

 

[pnora]

Part numbers and most likely some other date code or plant code.

 

[hunt2elk]

Bumper bracket #'s?

 

[DoomRunner]

Yes. Bumper bracket numbers

 

[dadsbee]

Part number and vendor ID number

 

[DoomRunner]

Thanks everybody.