I may be the bearer of not so good news, as your edition is priced clipped that may mean it was a book club cover,although it was a 1st edition bought from the publishers, the book clubs had the covers for them printed for from the publishers without a price printed on them and some people(out to make a fast buck at other people's expence) cottoned on to this and snipped the corner off to make it look like it had been a present.
As they were from the same print run it it very difficult to tell if it was a book club sale or a shop bought edition.
Hence a few unwary people were caught out and paid quite a lot for them being clipped they are worth a lot less, unless you can find an original dust jacket unclipped then you are certain to have an original of both.
Oh! and wecome to the forum.
He willnae tak' a drink! I think he's deid! , on the other hand though A Midgie in yir hand is worth twa up yir kilt.