"Super Mario" series Princess Peach plush

Release date: 2009
Region: Japan

Very soft plushie made by Sanei. This doll stands at around 8.5" tall.

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Underside

New Princess Peach plush

Release date: 2008
Region: United Kingdom

Available in 9", 11" and an extremely rare 16" versions. Like the plush by BD&A, this doll also has legs under her dress. Manufactured by Gosh International PLC and sold in the UK.

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Baby Peach plush

Release date: 2007
Region: Japan

This plushie is around 7 inches tall and it's made of incredibly soft fabric. Made by SK of Japan.

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Baby Peach plush keychain

Release date: 2007
Region: Japan

Yet another UFO catcher prize. Released as part of the Baby Mario series 2 key chains in 2007, there were 4 different characters to collect in this series. Made by Epoch/SK, it's around 5.5 inches tall and comes with a silver ball chain.

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Mario Party 6 plush doll (large)

Release date: 2006
Region: Japan/Hong Kong

Bigger (13 inches tall) version of the plush mentioned below. Judging from the quality of the tag and the way it is secured (plastic instead of a gold thread like most official plushes) this one is most likely unofficial. Despite that, it is one of the largest Peach plushies available.

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Tag

Mario Party 6 plush doll

Release date: December 2004
Region: Japan

This adorable Peach doll is the most common plushie that can be found. It's made of soft fabric and is about 8 inches tall. They are available in most import stores, online shops and even anime conventions.

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Underside

Princess Peach plush by BD&A

Release date: 1998
Region: USA

This beanbag plush was sold in Nintendo Power's "Super Power Supplies" merchandise catalog. It was very limited and it's nearly impossible to find one even in online auction sites.

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Super Mario World Peach mini keychain plushie

Release date: 1996
Region: Japan

A small keychain plushie of simple construction made by Banpresto. It stands at around 4 inches tall and has a metal chain and a paper tag.

Mario vs Wario Peach doll

Release date: 1995?
Region: Japan

Not much info can be found about this doll, except that it is part of a Mario vs Wario plushie series released around 1995. She has plastic bucket on top of her head.

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Angel Peach plush

Release date: 1993
Region: Japan

Released as part of a christmas themed Super Mario World set. Made by Banpresto, this doll is around 6.5 inches tall. It's also one of two Peach dolls with traditional plastic eyes.

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Super Mario Kart Peach plush (Banpresto)

Release date: 1993
Region: Japan

This doll was available as a prize in one of the popular Japanese UFO catcher machines. Made with soft fabric, this plush stands at around 6 inches tall. She's also riding a plastic pink go-kart with moving wheels and holding a flag.

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Super Mario Kart Peach plush (Takara)

Release date: 1993
Region: Japan

Released as a prize in UFO catcher machines. This this doll is around 6 inches tall and comes with a paper tag with golden hang thread. Like it's Banpresto counterpart, she's also riding a plastic pink go-kart with moving wheels. The quality of the steering wheel and fabric is much lower, however.

Super Mario Kart pull-back Peach plush

Release date: 1993
Region: Japan

Nearly identical to the doll mentioned above, except it has a pull-back mechanism under her kart. Made by Takara.

Super Mario World Mini Peach Plush

Release date: 1993
Region: Japan

This was part of a Super Mario World set released by Bandai. This doll stands at around 3 inches tall, it's contruction is very simple and has a white strap on the top.

Back of the Box

Super Mario World White Peach Plush (colorable)

Release date: Early 90s
Region: Japan/Korea

This is possibly the rarest Peach plush, it's practically impossible to find one loose let alone one mint in box. It was a 10 inch tall blank plush that included a few special crayons to color it. You could wash it to restore it to it's original state as seen on the box instructions. Mario and Yoshi were available too. Made in Korea.

Packaged

Peach keychain plush in a bubble

Release date: Early 90s
Region: Japan

This was part of a Super Mario World set released by Takara. The plush is inside a plastic bubble and stands at around 4.5 inches tall. It's worth mentioning that this plush is nearly identical to the Super Mario Kart one by Takara, aside from the size and lack of a Kart. It also lacks any feet unlike most Peach plushies. The bubble itself is around 6 inches tall.