Is a silver Mario amiibo coming in May?

Evidence of a silver Mario amiibo continues to mount, this time thanks to U.S. retail store employees on Reddit, whose investigations indicate a May release for the unannounced figure.

A Redditor who says he works at the retail store Fred Meyer created a thread that appears to show the silver toy in the store's computer system. The Redditor later added what appears to be photographic proof of the claim, which reads "AMIIBO SILVER MARIO" and lists a $12.99 price and a May 29 release date.

In the same thread, a Redditor with a bit of Target flair wrote of "a mystery DPCI in the middle of Wave 4 with a 5/29 release date."

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That date seems significant, given what we know of Nintendo's amiibo plans. During an April 1 Nintendo Direct presentation, the company announced the release of its next amiibo wave. Characters like Charizard, Greninja, Jigglypuff, Lucina, Ness, Pac-Man, Robin and Wario are set for a May 29 release alongside three Splatoon amiibo.

In a separate thread, another Redditor with Target flair wrote that they "took the UPC from the Silver Mario Fred Meyer leak (045496892067) and plugged it into Target's system and it comes back in the system!!!" A Best Buy-flaired Redditor in that thread responded to say that the UPC does not appear in the retailer's system. The same applied for a flaired GameStop Redditor.

Running that UPC though Brickseek, a website founded to search retailer sites for Lego sets, retrieves a Target listing for "Gaming Figures Nintendo," though it offers no specifics.

None of the Redditors claims to have seen the rumored amiibo, and Nintendo hasn't announced its existence, but this isn't the first evidence of the variant.

A listing on Nintendo's website in early February showed gold and silver variants of Mario's original figure. Nintendo later revealed the Walmart-exclusive Gold Mario amiibo. Earlier this month, a YouTube video showed the rumored amiibo working with Mario Party 10. The video maker said he purchased it from a Chinese website.

We've contacted Nintendo about the latest round of rumors and will update this article with more information as it becomes available.

For more on amiibo, which interact with games for Nintendo's Wii U and Nintendo 3DS systems, watch Nintendo's introduction below.