Another Carburetor question

I'm in need of a carb for my '73 Dart and found this one in the classifieds off of '74 duster 225.

Wondering if this is a reman'd carb or OEM and if I will have at least a summer of success from it if I but the thing to get my car running again.

6R 5147 B
4006687
7869
1396

12R-6845B

Elhton