Looks very nice and wow - Manual windows! By the next year 1974, power windows were standard equipment. 1973 Ford Thunderbird - cars & trucks - by dealer - vehicle... (craigslist.org)
Took 2 minutes to find these on ebay for $119.50. Identified as 73-76 15" Ford Thunderbird Turbine Hub Caps D3SZ1130A.
Those are exactly what I would put on it! I totally agree with you Mark. My pet peeve is wrong wheelcovers.
Now, having said that, how many of you would paint the outer smooth ring areas body color, to match the car's paint? That was an option from the factory.
Not I. I like the later color keyed wheel covers that were their own issue with the vinyl color painted in the center cap.