Hood insulation factory retainer markings

[KevinW]

I picked up a bunch of factory hood insulation retainers.  As I was cleaning them I noticed some markings.  I checked with a bag of originals I had and they have the markings too.

They are on the underside with a "B' on top and a number on the bottom.  So far I have seen the number range from 4 to 32 (still cleaning the pile).  The 32 negates a day of the month , but might be a line or run number.  I guess it is possible they had at least 32 injection stations and used the number for quality control.

Any thoughts? 

[169INDY]

Tool & Die: Mold and position numbers for QA/QC purposes would be my Guess.

(*repop have CHQ for Classic Headquarters).

JIM

[KurtS]

Yup, mold cavity numbers.