Two different sized wheels

I've got a 1965 Chrysler 300 Convertible, 383, Factory Air. I took my wheels down to the tire shop to have the tires dismounted so I can blast and paint the wheels. It turns out I've got two different size wheels. My car was all original before I restored it and I have no reason to doubt all four wheels to be factory originals. I've got (2) 14x6.5 and (2) 14x5.5. Is this normal? What do you guys think? The FSM lists both sizes but there is no listing for two different sized wheels on the same car.

'65 Chrysler should have the same wheel front rear & in the trunk.
Lots happen in 45 years, can you post pics and/or stamped info?

Broadcast Sheet?

Quote:

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'65 Chrysler should have the same wheel front rear & in the trunk.
Lots happen in 45 years, can you post pics and/or stamped info?

Broadcast Sheet?

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Here's what's stamped on the wheels:

The 14x6.5's:
NH is stamped on the front of both wheels between two of the lug holes.
MADE IN THE USA 14X65 KNT A9 is stamped on one and MADE IN THE USA 14X65 KNT F8 is stamped on the other.

The 14x5.5's
KH is stamped on the front of both wheels between two of the lug holes and a 5 is stamped on each side of the valve stem hole
Each have the Kelsey Hayes logo stamped on the interior with 8 64 also stamped. I'm assuming this is the date code which makes sence as my car was built in September, '64.

The broadcast sheet is not readable.

EDIT: I just looked at the Broadcast Sheet and under "WHL" which I assume stands for wheel, there appears there are two columns with a "0" in the first column and a "6" in the second.