SNES Cartridge Label Variants: Authentication and Label Era Guide

Keep It Classic. Updated 2026-04-17.

The bottom of a Super Nintendo cartridge tells you almost everything. Oval Seal of Quality or rectangle SOQ. Made in Japan, Mexico, or USA. Label stock thickness. Glue pattern around the edge. Open the cart and the PCB tells you the rest. This guide walks the exact checks we run before we plug a SNES cart into the test deck on the floor.

The market problem

Repro SNES carts have been a market presence for over a decade. The EPROM flash-cart scene produced many high-quality reproduction boards pressed into legitimate-looking shells, often with labels printed on consumer inkjet stock and aged. Below that tier sit the lower-effort fakes: glossy labels on shells that never shipped with glossy labels, "Made in China" stamps on shells that should read Made in Japan. And above the repro tier sit the graded-sealed market where re-sealed carts have been sold as factory-sealed at prices that justify the deception.

The Super Nintendo launched in North America in August 1991 and received retail support through 1999. Across that window, Nintendo shifted manufacturing, label stock, and Seal of Quality graphics in documentable patterns. Those shifts are the authentication signal.

Label and shell era overview

  • Launch era (1991-1993). Oval Seal of Quality on the label, typically upper-right. "Made in Japan" on the bottom shell stamp. Label paper is a medium-weight matte stock. Earliest cart PCBs often show simpler board revisions with fewer components.
  • Mid-generation (1993-1996). Transition from oval SOQ to rectangle SOQ happens across this window (varies by title release date). Manufacturing shifts partially to Mexico. "Made in Mexico" stamp appears on many mid-cycle releases. Some titles exist in both oval and rectangle variants depending on pressing run.
  • Late-generation (1996-1999). Rectangle SOQ standard. "Made in Mexico" dominant on the bottom stamp for North American releases. Players Choice re-releases begin this window (the white-label "Player's Choice Million Seller" variants are late-cycle re-pressings of the best-selling titles).
  • Japanese Super Famicom carts. Different shell (two-tone gray with rounded edges), different region lockout, Japanese-language labels. Not interchangeable with North American SNES without hardware modification. Not a fake, a different market.
  • European PAL SNES carts. Rectangular shell similar to North American, PAL regional lockout, different box art. Also not a fake, different market.

Seven authentication checks

1. Oval SOQ vs rectangle SOQ

The Nintendo Seal of Quality appears on every licensed Nintendo-era cart. On SNES, it transitions from an oval shape (launch through mid-cycle) to a rectangle (mid through end of retail support). For a given title, research the original release date. A 1991-1993 title should carry the oval SOQ on original first-pressing labels. Later pressing runs of the same title may carry the rectangle. A rectangle SOQ on a title that only pressed in 1992 is a flag. Players Choice re-releases carry the rectangle and the white label banding.

2. Country of manufacture stamp

Flip the cart. The bottom shell carries a molded-in stamp reading "Made in Japan" or "Made in Mexico" (North American releases). USA production is rare on SNES carts; most were Japan-made early and Mexico-made later. A cart stamped "Made in China" is a modern reproduction shell. A cart with no stamp at all or a visibly scraped stamp area is a flag for a reshell.

3. Label paper stock and finish

Original SNES labels are printed on a medium-weight matte paper stock with a specific finish. They absorb light rather than reflect it. Reproduction labels are commonly printed on glossy inkjet or laser paper that reflects flash photography much more than originals. Under raking light, original labels show a slight texture to the paper grain. Repro labels look flat and plastic.

4. Label registration, print resolution, and color

Originals were offset-printed at commercial print resolution. Under a loupe, color is laid down in clean dot patterns. Repros printed on consumer inkjets or color lasers show a different dot pattern (banding, coarser rosette, or visible drop spray). Color match on repros is often close but not exact (a shade off red, a slightly different blue). Compare against a verified example of the same title if possible.

5. Label glue and edge cut

Original factory labels are die-cut with clean edges and adhered with factory-grade label adhesive that ages consistently. Edges are straight and corners are sharp. Reproduction or replacement labels often show: scissors-cut edges with minor irregularity, lifting corners from consumer adhesive that does not age well, or yellowing glue visible at the edge where it overlaps the shell. On a decades-old original, the label edge should look clean, not lifted.

6. Open-cart PCB check

SNES carts are held together by the Nintendo proprietary 3.8mm gamebit security screw. With the correct bit, the shell opens and reveals the board. Original Nintendo PCBs carry: a Nintendo-printed board designation (SHVC-, SNSP-, or SNS- prefix depending on region), clean green PCB finish with Nintendo silkscreen, date codes on the ROM chips and any support chips. Reproduction boards often show: different PCB color (blue, red, or off-green), hand-soldered chip legs with visible solder splatter, missing or incorrect board designation silkscreen, modern EPROM chips with post-1999 date codes on what claims to be a 1992 title.

Opening a cart voids some grading services' certifications, so this is a check we run on carts we are preparing to list as original-cart-only pieces, not on sealed or graded carts.

7. Save-battery check for titles that use SRAM

Titles that save progress use battery-backed SRAM (a CR2032 battery soldered on the board). Legend of Zelda: A Link to the Past, Super Metroid, Final Fantasy III (VI), Chrono Trigger, and others. Original batteries from 1991-1996 are almost universally dead by now. We plug-test and check save function on the real console. A cart that saves fine on first plug is either a recent battery replacement or a repro. Neither is bad, but we disclose which.

Cart-only vs CIB vs sealed

  • Cart-only. Just the cartridge. The bulk of the SNES secondary market. We plug-test every cart-only piece before listing.
  • CIB (Complete In Box). Cart plus original box plus manual plus any inserts (dust sleeve, registration card, Nintendo Power ad insert, controller diagram). Condition of the box and manual drives value significantly more than the cart in this tier. We photograph every insert separately.
  • Sealed. Factory-sealed in the original shrinkwrap. Authentication of sealed SNES is a separate discipline with its own re-seal detection methodology (shrink texture, H-seam vs factory seam, wrap tightness). We do not grade sealed carts ourselves. For high-tier sealed purchases we strongly encourage buyers to use WATA or VGA third-party grading; we are not that service.

Common repro and fake tells

  • Glossy label on a title that shipped matte. Fast visual flag.
  • "Made in China" bottom stamp. Modern reshell.
  • SOQ variant that does not match the title's release window. Rectangle on a 1992-only title is a flag.
  • Weight mismatch. Original carts have a specific weight depending on board revision. Repros using lighter modern PCBs often feel noticeably lighter. Not definitive, but a signal.
  • Post-1999 date code on chips inside the shell. Immediate fail. Nintendo retail support ended in 1999 for SNES.
  • Save function works flawlessly on first plug-test after decades. Possible (recent legitimate battery replacement, which is fine) or a repro. Triggers a deeper look.

Our method

Every SNES cart that comes through the shop gets a visual check against the label and shell era markers, a weight check where the title has a known reference, and a plug-test on a real SNES console. Titles with SRAM get a save-function test. CIB pieces get inserts photographed individually. We note any inconsistencies in the listing body. We do not grade or authenticate sealed pieces; for those, third-party grading (WATA, VGA) is the industry standard and we recommend it for any sealed purchase past a meaningful price threshold.

See the method on real pieces

Active SNES inventory on the floor right now where you can see the era markers in the photos:

Related

Browse the SNES collection or the broader Video Games collection. Coming soon: NES authentication (5-screw vs 3-screw shells, oval vs rectangle NES SOQ), Nintendo 64 cart tells, and PSX disc-press identification.

FAQ

Are my SNES games real?

Run the seven checks: SOQ shape, country stamp, label paper finish, print resolution, label glue, PCB inspection if warranted, and save-battery behavior if the title uses SRAM. Most repros fail on label paper or country stamp before you have to open the cart.

What does oval SOQ vs rectangle SOQ tell me?

The Nintendo Seal of Quality transitioned from an oval graphic to a rectangle graphic across the SNES lifecycle (early-mid 90s transition). Oval-era titles should carry oval SOQ on first-pressing labels. Later pressings and Players Choice re-releases carry the rectangle.

What does Made in Mexico vs Made in Japan mean on a SNES cart?

Nintendo manufactured SNES carts in Japan early in the generation and shifted partially to Mexico by the mid-90s. Both are legitimate. The stamp helps date the pressing run. Made in China is a modern reshell, not a Nintendo-manufactured cart.

Is my SNES cart a repro?

Tells include: glossy label paper where the original was matte, Made in China bottom stamp, label edges that lift or show scissors-cut irregularity, a cart weight noticeably lighter than a reference example, and post-1999 date codes on the chips inside the shell.

Should I grade my SNES cart?

For sealed or legitimately rare pieces, yes, via WATA or VGA. Third-party grading adds verified provenance and a condition-graded slab for resale. For cart-only common titles, the grading fee typically exceeds the value lift. We do not grade in-house; grading is a third-party service.