Quick answer
A first edition of The Sign of Four by Arthur Conan Doyle (Spencer Blackett, 1890) is identified by: First book edition, October 1890, after the February 1890 appearance in Lippincott's Monthly Magazine as 'The Sign of the Four'. True first appearance = Lippincott's Monthly Magazine, February 1890 (titled 'The Sign of the Four').
Checklist — a true first has these:
- First book edition, October 1890, after the February 1890 appearance in Lippincott's Monthly Magazine as 'The Sign of the Four'P-002409
- Decisive first-state points: on the Contents leaf (p.[iii]) the figure reads '13' for '138' (incomplete numeral); on page 56, line 16, 'wished' is misprinted 'w shed'; the binding is stamped 'Spencer Blackett's Standard Library'; frontispiece after Charles Kerr; red cloth with black decorative border and giltP-002410
- Publisher imprint reads Spencer Blackett
- Not a book-club edition (see below)
| Author | Arthur Conan Doyle |
|---|---|
| Publisher | Spencer Blackett |
| Year | 1890 |
| True first | — |
| Format | Hardcover (trade) |
| Key point | First book edition, October 1890, after the February 1890 appearance in Lippincott's Monthly Magazine as 'The Sign of the Four' |
| Book-club edition exists? | — |
The points of issue
- First book edition, October 1890, after the February 1890 appearance in Lippincott's Monthly Magazine as 'The Sign of the Four'
- Decisive first-state points: on the Contents leaf (p.[iii]) the figure reads '13' for '138' (incomplete numeral); on page 56, line 16, 'wished' is misprinted 'w shed'; the binding is stamped 'Spencer Blackett's Standard Library'; frontispiece after Charles Kerr; red cloth with black decorative border and gilt
How to confirm the first-printing statement
Publishers stated first printings differently by era. The decisive tells are a printed “First Edition/First Printing” statement, a number line whose lowest number is 1 (Random House ends at 2), or a dated first printing with no later printings listed. Paste your copyright page into the number-line decoder.
How to verify your copy, step by step
- Find the copyright page — the verso (back) of the title page.
- Check for a number line or dated printing — the lowest number present is the printing; a dated first printing with no later printings listed is the tell.
- Rule out a book-club edition — a blind-stamp on the rear board or a jacket with no printed price marks a book-club copy.
- Photograph four things — the front cover, spine, title page, and copyright page — the standard record for identification.
The dust jacket
For a collectible first edition the dust jacket matters as much as the book. Confirm the jacket is present and unclipped — the printed price should still be at the corner of the flap (a clipped corner or a price-less flap can indicate a book-club issue). First-state jackets can differ from later ones in the cover art, blurbs, or review quotations; where a specific first-state jacket point is known for this title it is noted above.
Binding & format
Where multiple bindings exist, the hardcover trade issue is usually (but not always) the precedence copy — confirm against the points above. Later printings often show cheaper cloth, thinner boards, or simplified spine stamping. A simultaneous signed or limited issue, when one exists, is a distinct state from the trade first.
Is this the true first?
True first appearance = Lippincott's Monthly Magazine, February 1890 (titled 'The Sign of the Four'). First book edition = Spencer Blackett 1890 (titled 'The Sign of Four'), with the '13'-for-'138' Contents point and the 'w shed'-for-'wished' point on page 56.P-002411
Telling it from reprints & book-club editions
Later issues and reprints correct the '13'/'138' and 'w shed' errors.P-002412
Frequently asked questions
Is my copy of The Sign of Four a first edition?
A first edition of The Sign of Four by Arthur Conan Doyle (Spencer Blackett) is identified by: First book edition, October 1890, after the February 1890 appearance in Lippincott's Monthly Magazine as 'The Sign of the Four'.
How do I tell the first printing from a later one?
Check the copyright page. A stated first edition, a number line ending in 1, or a dated first printing with no later printings listed is the key. True first appearance = Lippincott's Monthly Magazine, February 1890 (titled 'The Sign of the Four').
Is the book-club edition the same as the first?
Later issues and reprints correct the '13'/'138' and 'w shed' errors.
I have a first edition of The Sign of Four — what should I do?
First, document the copy: photograph the copyright page (the number line and any edition statement) and the dust-jacket flap — an unclipped, priced jacket matters. Confirm the points of issue above against your copy, and use the free First Edition Checker to decode the printing. To sell, the author’s collecting guide covers the market. And if you are clearing books in the Albuquerque area, the New Mexico Literacy Project offers free pickup, any condition, and makes sure collectible copies are identified rather than discarded.
Glossary
- First edition
- Every copy printed from the first setting of type. Collectors usually want the first edition, first printing (the true first).
- First printing / impression
- A single press run from that setting. The first printing is the earliest and most desirable; later printings are still the first edition but not the true first.
- Number line (printer's key)
- A row of numbers on the copyright page (e.g. 10 9 8 7 6 5 4 3 2 1). The lowest number present is the printing — a line including 1 marks a first printing (Random House deliberately ends at 2).
- Points of issue
- Specific physical details — a stated edition, a number line, a typo, a jacket state — that identify the true first printing.
- Book-club edition (BCE)
- A reprint made for a book club. Tells include a blind-stamped dot or square on the rear board and a dust jacket with no printed price. Not the true first.
- First thus
- The first appearance of a particular version (first paperback, first illustrated, first U.S. printing) — a first of that kind, not the first edition of the work.
Related first editions
How to cite this page
New Mexico Literacy Project. “Is The Sign of Four by Arthur Conan Doyle a First Edition? Points of Issue.” NMLP First-Edition Identification Reference. Reviewed 4 July 2026. Retrieved from https://newmexicoliteracyproject.org/first-edition/the-sign-of-four. Licensed CC BY 4.0 — part of the open Canonical First-Edition Points of Issue dataset (DOI 10.5281/zenodo.21184548).