EIRIN on Japanese Movie Posters: What It Is and Why It Matters

February 12, 2026

What Is EIRIN?

EIRIN (映画倫理機構, Eiga Rinri Kiko) is Japan's independent film classification body, established in 1949. It assigns the age ratings required for commercial theatrical exhibition in Japan.

Although not a government agency, films are not screened in Japanese cinemas without EIRIN classification.

For collectors, the EIRIN mark printed on a poster is a key authentication and dating tool.

EIRIN mark example 1 — Examples of authentic EIRIN marks across different years and formats. Note the consistent typography and sharp printing, even at very small sizes.

EIRIN mark example 2 — Examples of authentic EIRIN marks across different years and formats. Note the consistent typography and sharp printing, even at very small sizes.

The Three EIRIN Marks

EIRIN's system uses three distinct marks, each serving a different purpose. Understanding the distinction matters for authentication.

1. The Eirin Mark (映倫マーク) is placed on film prints. It certifies that the film itself has completed EIRIN's review. It appears in the opening or closing credits, near the title. The number below it is the 映倫番号 (Eirin Number), assigned one per film.

2. The Senzai Mark (宣材マーク) is the mark that appears on theatrical posters and other official advertising materials (宣材). It certifies that the poster's visual content has passed EIRIN's separate advertising review process (宣伝広告審査). The number below it is the 宣材番号 (Senzai Number), formatted as a five-digit number that can be followed by "-A" (the A stands for Advertisement). This number is different from the film's Eirin Number.

3. The Classification Mark (区分マーク) indicates the age rating: G, PG12, R15+, or R18+. It can appear on both prints and promotional materials.

When collectors refer to "the EIRIN mark on a poster," they are technically referring to the Senzai Mark. Both marks use the same visual logo (映倫 / EIRIN), but they carry different numbers and serve different functions.

Where to Find the Mark on Posters

On most post-1964 Japanese theatrical posters, the Senzai Mark appears in the lower-right area, near the billing block or distributor credits. It takes the form of a small circle or rounded rectangle containing 「映倫」 plus the senzai number (XXXXX or XXXXX-A on recent prints).

On authentic theatrical posters, the mark, even when very small, should remain sharp and legible under normal inspection. The characters 「映倫」 and the numerical code are typically printed with clean edges consistent with the poster's original offset printing.

Some marks are extremely small and may require magnification to read accurately. However, excessive blur, pixelation, or poorly defined characters can indicate reproduction, digital reprinting, or image-based copying rather than original theatrical printing.

How to Read the EIRIN Number

The mark usually includes a year reference. Two numbering systems were used, depending on the studio:

Japanese era year system (used by Daiei, Nikkatsu, Shochiku): The first two digits represent the era year. For the Showa era, add 25 to get the Gregorian year. Example: 47 = Showa 47 = 1972.

Gregorian year system (used by Toho, Toei): The first two digits represent the Western calendar year directly. Example: 72 = 1972.

For films from 2000 onward, the format shifted. The first digit corresponds to the first digit of the year, and the last digit to the final digit: 22 = 2002.

Era Conversion Reference

Showa N = 1925 + N (Showa 1 = 1926)
Heisei N = 1988 + N (Heisei 1 = 1989)
Reiwa N = 2018 + N (Reiwa 1 = 2019)

The EIRIN number dates the classification year for that campaign. It does not encode month or day. Revivals receive new numbers.

Why It Matters

Authenticity: A correct Senzai Mark strongly indicates a poster was printed for official theatrical use in Japan. It confirms the poster went through EIRIN's advertising material review.

Precise dating: The number anchors the campaign to a specific year.

Valuation clarity: First-run and revival posters often carry different market profiles. The EIRIN number helps distinguish them cleanly.

Exceptions and Edge Cases

Absence of the mark is not automatic evidence of inauthenticity. There are several legitimate scenarios, each with a different underlying reason.

Advance or preview posters may have been printed before the advertising review was finalized. EIRIN's review occurs at the color proof stage, and distributors sometimes needed materials before that process was complete.

Chirashi (B5 flyers) are not classified as 宣材 (official advertising materials) under EIRIN's system. They were produced as informational flyers for distribution at theater counters and lobbies, outside the scope of EIRIN's advertising material review (宣伝広告審査). No review means no Senzai Number was ever issued. This is not an omission or a layout decision; chirashi are categorically outside the process. According to EIRIN's own official guidelines ("映倫マークの取扱いご案内," 2009), the materials subject to the Senzai Mark include posters, newspaper and magazine ads, banners, and standees. Chirashi are absent from this list entirely.

B3 posters were most commonly produced for transit advertising: station platforms (駅貼り) and in-train hanging displays (中吊り). These were distributed through transit advertising channels (交通広告) rather than through the theatrical exhibition pipeline. Because they entered the market via advertising agencies and transit companies, they typically were not submitted to EIRIN's advertising review either. However, unlike chirashi, the B3 exclusion is not categorical. Some B3 posters that were produced as part of a theatrical campaign (rather than for transit use) do carry the mark. The presence or absence on a B3 depends on the distribution channel, not the size itself.

Small independents or special-event printings that operated outside the major studio distribution system may not have submitted materials for EIRIN review.

Always evaluate design, paper stock, printing method, and distributor data in context.

Collector Checklist

Locate the mark in the lower margin (typically lower-right for posters).
Transcribe the number and any era notation.
Identify whether the number uses era year or Gregorian year format.
Convert the year.
Confirm alignment with the known Japanese release timeline.
Determine: first run or revival.
Record this clearly in your catalog.

Our Documentation Standard

The EIRIN number is recorded when present.
Era codes are converted to Gregorian years.
Re-releases are explicitly labeled.
Exceptions (advance, chirashi, B3 transit, special events) are documented with notes explaining the reason for absence.

Glossary

EIRIN - Japan's film classification body (映画倫理機構); also shorthand for the printed classification mark on posters and prints.

Senzai Mark (宣材マーク) - The specific EIRIN mark placed on posters and advertising materials after passing advertising content review. Now identified by the "-A" suffix on the number.

Chirashi - Small B5 cinema handbill distributed to promote a theatrical release. Not subject to EIRIN's advertising review.

Tatekan - Tall theatrical poster format composed of two B2 sheets (approx. 51 x 146 cm).