Has anyone seen these hubcaps before?

they came on this i just nabbed off clist. the car has deep rims. the guy showed me pics of the car on the showroom floor and said the dealer had them on it in feb 1970. he was the original owner until last week.
weird move on the dealers to put plymouth caps and rims on a dodge swinger
love the tires too. too bad he left it covered under a lean to for so many years. but i have the will to bring her back to life... 35000 original miles 4 speed 340 8.75 with reverse lockout still intact.
What a find !! Good luck restoring it , can't wait to see it done up . By the way dealers often did that , my mother like the plymouth hub caps , so the dealer put them on her Dart .