Is your comic
a first printing?

What the barcode actually tells you

A modern comic carries a twelve digit barcode with a smaller five digit block to its right. Nearly all the useful information is in that five digit block, and it reads like this:

• First three digits: the issue number. 001 is issue one, 450 is issue 450.
• Fourth digit: the cover. A 1 is the main cover. A 2 or higher means a variant.
• Fifth digit: the printing. A 1 is a first printing, a 2 is a second printing, and so on.

So 00111 is issue one, main cover, first printing. 00112 is the same comic, same cover, but a second printing. Publishers do not always make that obvious anywhere else on the book, which is exactly why this is worth knowing.

The twelve digit part

Less useful than people assume. The first digit is a product type marker, the next five identify the publisher, and the following five identify the title, not the issue. That title code stays the same across an entire series run, so every issue of a series shares it. The final digit is a check digit, a piece of arithmetic that lets a scanner confirm nothing was misread. This tool checks it too, which is how it can tell you if you have mistyped something.

Three things that catch people out

Old comics have two digits, not five. Through the 1980s and into the early 1990s the supplement was two digits encoding the cover month, so 05 is May and 12 is December. Worse, those were reused every twelve months without the main barcode changing, so two comics a year apart can carry an identical barcode. The five digit format only became common around 1993.

Plenty of variants have no barcode at all. Retailer incentive variants frequently ship without one. Amazing Spider-Man #666 had roughly 145 variants and most carry no barcode whatsoever.

It is strong evidence, not proof. Publishers have not always followed the convention. Check the indicia as well, which is the block of small print at the bottom of the first page on older comics, or on the last page since around 2006. Later printings normally say so there. First printings usually say nothing at all, so silence is the signal.

What the barcode cannot tell you

The title. The publisher assigns that five digit title code themselves and there is no public register, so a barcode alone cannot tell you that you are holding Amazing Spider-Man rather than anything else.

Whether it is newsstand or direct edition. That distinction is not in the numbers, it is whether a real barcode is there at all. Newsstand copies carry a proper barcode. Direct edition copies, sold through comic shops, carry a publisher marker in that same box instead, a Spider-Man head on Marvel titles from 1977 onwards, or a diamond on DC titles. Newsstand copies of key issues from roughly 1988 to 1997 can be worth several times the direct edition, because unsold newsstand copies had their covers stripped and were pulped.

Why the printing matters so much

A first printing's quantity was fixed before anybody knew the comic mattered. Shops ordered it blind, based on a guess about an unknown book, and that number is locked forever.

Later printings are ordered precisely because demand exploded. The publisher goes back to press in response to knowledge, so supply expands to meet it. That is why scarcity is permanently baked into a first printing and structurally impossible for the ones that follow, and why collectors, price guides and the grading companies treat the first printing as the book.

One honest caveat. Being a first printing is not enough on its own. A first printing of a heavily hyped modern comic with a million copies is still worth very little, because a million of anything is not scarce. What you want is a first printing and genuine scarcity and demand.