Was this the one that went for 62K? If so that looks to be an exceptionally restored car and easy to see why it would be big big money:
1970 Plymouth Duster at Kissimmee 2024 as F70 - Mecum Auctions
I bet this one will be big money:
1971 Plymouth Duster at Kissimmee 2024 as S50 - Mecum Auctions