Balbinus Sestertius Ric 16 Pickup

You could try contacting coin clubs and shops in the Lansing area and see if anyone remembers any prominent ancient collectors (coins like those listed in the catalog would have been not in the domain of a casual collector, so odds are, someone will know the name.) The tag is dated 1974 so you'd be looking for collectors who were active around that time. Not sure what the letter is after the date - looks like an F.

You could also contact the auctioneers if they're still in business, and ask if they keep logs for provenance of consignments.

Long shots, but better than no shots.

That being said, it's quite lovely, in my opinion, and doesn't look as though it has degraded substantially since 1987, as it largely matches the auction catalog description.

Edit: Joe Lepczyk's son Tim is apparently active on the Internet; he could be contacted and might have further information, perhaps.
Apparently Lepczyk was quite a large dealer and his catalogs have a large number of ancients listed. I found a few of the catalogs online but most of them don't seem to have provenance listed for lots.

Nice pickup of a rare emperor. Good one!