It is curious, isnt it Chris? Considering too, that parts of the text and color palette are off and different, as mentioned. Not only is the lower left void of the yellow, but the background color in the circular portrait has gone from dark blue to a more lavender color and the first circle around that same portrait has gone from yellow to white.
A possible re-release? Could be. But if that was the case, it would not have the ® 1941 written on it. It would reflect a later re-release year.*
And one would almost think that the time it took to create the painted image of Leigh and Olivier would have been used on a first release and a photo on a later re-release (but wasnt, of course, as the HA copy shows).
Interesting, to say the least.
And the handwritten info on the bottom border takes the cake for me.
*Just looked on imdb. The film was re-released in 1947, in the US, by Film Classics.