1972 metal seat emblems

3654975 Emblem Swinger 340 Seat Dart Medallion Mopar Twister Demon Duster Body

also Len Dawson has one NOS
http://www.dpmotorparts.com/list_parts.cfm?page=293

and here:

Mopar a body metal seat emblems duster demon dart | eBay

[FOR SALE] - 1972 Duster or Demon Bucket and Rear Seat Medallions COMPLETE SET