Flags - period correct or not

[Dianaa]

When people display a vehicle what's the protocol about flags.

For example during WWII the US national flag "the Stars & Stripes" had a canton with a blue background with 48 stars representing the 48 continental states of the time.


After WWII when Hawaii and Alaska became states, another 2 stars were added to the canton.

So do people do with WWII US vehicles, display them with the WWII 48 star or the current 50 star flag?

My problem is that the period correct flag for my SADF vehicle is associated with apartheid.


So should I us the 1928 flag or the current less politically sensitive one?