Hours of Idleness. A Series of Poems, Original and Translated - George Gordon, Lord Byron, A Minor 1807 June - S. and J. Ridge, Newark - First Edition, First Issue A nice clean first edition first issue of Byron's first regularly published book, in contemporary binding with half title.

In every Bookseller’s I see my own name, & say nothing, but enjoy my fame in secret,’ the 19-year-old Byron wrote to a friend after the publication of this, his first work to be available to the public.

Twelve of the thirty nine poems are new, with the balance selected from his only other collections at the time, the two privately printed ‘chapbooks’
Fugitive Pieces (November 1806, which he destroyed leaving only two of the estimated 50 copies printed) and Poems on Various Occasions (December 1806 - January 1807, of which an estimated 100 copies were printed) .

Although
Hours of Idleness received mixed critical reviews, this volume marked the public beginning of one of the most admired poets in English literature and quickly ran to a second edition in March 1808 under the title Poems Original and Translated.
  Contrary to my former Intention, I am now preparing a volume for the Public at large, my amatory pieces will be expunged, and others substituted, in their place ... This is a hazardous experiment, but want of better employment, the encouragement I have met with, & my own Vanity, induce me to stand the Test, though not without sundry palpitations. – The Book will circulate fast enough in this County, from mere Curiosity.

The first edition may be distinguished from the 'large-paper' demy-octavo reprint by the two typographical errors – ‘thnnder’ on line 4 of page 114, and ‘Thc’ on line 21 of page 181, and sometimes (but not always) by the correct numbering of p. 171 as here. It also contains the cancel leaf of D2-3 (pages 19-22) with the correct reading in the second line of the poem: ‘Those tissues of falsehood which Folly has wove’ and no footnote. Pages are watermarked ‘1806’ as called for.

Reference: Wise
Byron, I page 7. Hayward 218. Randolph 9. Peter Cochran, Fugitive Pieces, 2009. Eisler, 134.

Crown octavo (19.5 x 12 cm, page size 18.4 x 11 cm). pp. [2] [1 (half title)] [1] [1 (Title)] [1] v-xiii [1 (Errata)] 187 [3].
  Contemporary binding of quarter brown diced morocco over marbled boards, smooth spine lettered and lined in gilt, speckled edges.   Condition: Near fine, foxing to endpapers and a little to half-title, in very good contemporary binding, rubbing to boards, wear to spine ends more severe to corners.   Ref: 109041   Price: HK$ 12,000