<VV> GM parts "bin tags" - information request

[NicolCS at aol.com]

Does anyone happen to have any NOS parts with the GM bin tag stuck in with  
it?  These 1" x 3" white tags have the part number, group number and some  
little letters along the bottom.  I'd be interested in knowing what the  little 
letters are on a couple of different tags.  Typically, they would be  a group 
like "A, G-10, H, HR, Z"  Usually, on Corvair parts, there will  only be a 
couple of letters like "H, R")  
 
Please respond off-list and I'll publish the results.  These letters  
represent the body-codes for which vehicles that the part fits.
Thanks, Craig Nicol