Determining Editions - Original Copy?

Question

How can I tell if the book I found is an original edition. it only has one copywrite date (the original date), but the dustcover marks it as an award winner- thus not the original copy. (Plus- there seems to be a NUMBER of early dustcovers to this book).

I understand there are also Book Club Editions...and i don't know if it's that either- though there aren't markings to indicate that.

Thanks!

Answer 1

the page with the copyright info would say if it is a first edition, or which printing it is.
Here is a site that helps make sense of the "encryption"
http://www.auctionbytes.com/cab/abu/y202/m08/abu0076/s07