Chevy 12-bolt identification

[Baron Von Zeppelin]

If it turns out to actually be 2.73 , then GP
there is a listing for it as 12bolt 2.73 non-posi = LE
12bolt 2.73 Posi = LS

10bolt ratio is 2.78

If it turns out to actually be 3.31 , then Buick A-body

LE is basically an "and/or" mystery code according to some Google searches.
Did find a few instances of folks trying to decipher ones they had acquired as loose pieces - and the above info is best data found.

in case you haven't tried the "turn test" on a non-posi ,
one revolution with lug stud - count pinion turns - then double that number.
1 and 5/8 approx = 3.31
1 and 1/2 approx = 3.07
1 and 3/8 approx = 2.73
etc ...