The "First" Last Unicorn

When Peter S. Beagle sat down to write "the last unicorn", what originally came out was quite different from the version that three generations have known and loved. The original version was never finished, since it was going nowhere; thus the whole trashing it and starting over from the beginning, but it has been published, as "The last Unicorn, the lost version." Only 1000 copies exist, all autographed by the author and numbered, and I have copy 703!