[Closed] Pics: I do not know what is it for yours ?

Yes, I can see what you mean. Odd.

Not seeing it.

I'll take it off your hands if you don't want it.

All 58 Bonnevilles had this style trunk lid.

I have the same with this 1:43 Motor City Packard Formal Sedan (pic)

Somehow the front-end "feels" a bit crooked...

photo no longer available

Measure the roof and look at the fit of the window frames inside the body shell

From your photo, the roof is either not made square which I doubt or the greenhouse has been slightly crushed or twisted. See where the base of the rear window, top left of photo gapes slightly and is not seated well?

Also, I notice that the roof may overlap the windshield header a bit on the passenger side. If the roof is not lined up evenly on both sides of the windshield, this will make things appear crooked.

you are right Randall

Indeed ,The roof overflows to the front passenger side
Which accentuates the torsional effect.
But there is still a difference of alignment of the rear and front wings : right and left .
But it is not very serious and I love this model and I keep it in my hands Joe.

I saw the same thing on the Conquest '60 Cadillac HT once, a shame and I returned it.

I would be curious to compare the BRK Bonneville HT with your Con Bonneville side by side and from the same angle as your picture.

Does anyone have both?

I suspect this is due to moulding techniques.

All these models have been around awhile and I would think the bodies were produced in a centrifugal casting machine. In early white metal models this could mean banana shaped bodies due to the action of the machine, the softness of the mould and the temperature of the metal. Any variations or a combination of them could produce a warped body. If you examine older body castings produced this way you'll often find one side of the casting is thicker than the other. This may not show up when the model is built. However, if there are multi-pieces, perhaps a chrome greenhouse and separate top, all these parts are subject to the same possible problems in varying degrees. It's a bit of a lottery as to how all the bits go together. It's all part of the dark art of white metal! The material has soul, and a mind of its own.
Comparison with the old Brooklin Bonneville might be interesting. I'm working on one of these at the moment as a fun project but it's too far ruined now to compare. However, Brooklin have always used, apart from the very early days (banana shaped Pierce Arrow anyone?) a block casting system for body shells although the smaller parts are produced on centrifugal machines and even here some bits have to go back in the melting pot if the casting conditions haven't been spot on.