Olton, H3.5

When two stones were found near Olton, Texas in 1948, they were initially thought to be paired with each other — and assumed to be distinct from other nearby finds.   The stones were later shown to be unequilibrated H-chondrites similar to Dimmitt.  This particular stone was bought directly from a resident of Olton; he said that it had been found in a field a mile outside of town.  This stone grossly resembles Dimmitt, and I think Olton is likely a pairing.

 Meteoritical Bulletin entry for Olton:

This 667 gram complete stone would be the main mass of Olton.  Or a nice piece of Dimmitt.