FOR SALE for a limited time only! 1973 Dodge Dart Custom 4-door

Thanks for the info.
The ''U'' refers to the car being built to U.S. specs and is right for the country you live in and where it was sold.
The W84 refers to 14X41/2'' Black road wheels (standard steel wheels).
The wheel covers as seen in the broadcast sheet are deluxe wheel covers which would be correct in the original post as shown. (W11)
If the car came with magnum 500 wheels with trim rings (which is on the car now and look good) the code would be W23.
And if the car came with Rallye Wheels with trim rings, the code would be W21.
The mystery to me is the top right corner of the broadcast sheet under ''Y'' is a 7.
I can't blow it up to be clear enough to see the numbers or letters above the 7.
My best guess is it's Y17, Y37, Y77, Y87, or Y97.
It could be a factory lease vehicle which makes the most sense.
And the E44 on the fender tag is a standard 318 4 barrel, and the D34 is a standard automatic transmission (904).
D35 would be a 727 automatic.

I hope this helps you and helps your sale out.
Or if you end up keeping the car, it is a great car with lots of options in good condition for a good price.
Can you tell me your reference basis, please? No ego here, just a desire for better, more accurate personal info source.

Although I haven't had time to investigate the discrepencies you have pointed out. (They make vastly more sense than what my reference book gave me. And I thank you very much for your efforts!), I have found the book I used to decode the sheet/plates. It is:

1969-1974
Mopar Broadcast Sheet
Dodge, Plymouth, Chrysler, Imperial
Decoder Manual
By Jake Hare

And here may be the crux of my inaccuracy: Published in 2002. And in hindsight, not likely to be up to date info even circa 2002.

My bad, right or wrong, using a nearly 25 year old reference book as valid documentation, particularly in the ever evolving community of Mopar enjoyer/restorers. My fault for relying on an aging library.

Despite the present owner being an idiot (I know him pretty well.), Thank You for the compliment on the car. It really is a nice car and I hope someone else sees it, too.