Yes, a bale of cotton standing on-end. Cotton, beef, and corn were the main agricultural products.
Back-story: waiting for the docent to lead her tour group to those buildings to unlock them, she mentioned the family shipped cotton to England during the Civil War. A portion of each sale was retained and invested in England to shield the money for later use. Hence the family had reserves to sustain the plantation after the war - many others lacked that foresight and lost everything to infamous "carpetbaggers" from the north.
Thank you, and happy you enjoyed the set.
Bob