per Darrell Davis:
region 15 = company accounts/home office
region 16 = company accounts/field locations
region 42 = DETROIT (dealer franchise)
there is not a specific "dealer" associated with 81100
it's a company car arraigned/managed/based out of the Lynch Rd. assembly plant
by comparison:
15 81101 would be associated with a company car arraigned/managed/based out of Chrysler Corp. Central Operations 341 Massachusetts Ave. Highland Park, MI
what kind of car is it? can you share a copy of the IBM card?
Do you know what dealer code 82040 is? This is another Region 15 car that also is marked as Export. A 1960 Chrysler 300F.