I have a fairly comprehensive collection of all the Impressions that exist (one doesn't) and Publishers of the GA&U Silmarillion from 1977.

Deagol states on his wonderful (forgot to say fantastic) website http://www.tolkienbooks.net/php/details.php?reference=62120 that there is a difference in colour on the dust jackets of the first export edition.

"The difference in colour between the two dustwrapper variants is subtle, but is noticeable when the two are placed next to each other."

I can't see this at all, all my copies look identical in colour, all 8 of them.

So if you have copies of the first Export Edition (printed by Clowes), can you confirm this statement, as I much I'd like to, I can't.