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You've found a vintage Knapp Monarch Redi-Pop electric popcorn popper! This automatic corn popper, made of metal (aluminum), has bakelite handles & glass lid. Marked "K&M Knapp Monarch, St. Louis, Mo USA, Cat. No. 12-252B / 12V AC Only 400W / Do not immerse in water / patented / UL." This popper heat promptly and has an adjustment screw on the bottom. The inside of the popcorn popper has stains and scratches from normal age and use, and there is some grease build-up on in some of the crevices on the outside. It is chip- and crack-free; the lid is not original, but is a suitable replacement; the cord has a coil neck for durability. It measures 8" diameter and 6.25" tall (exclusive of lid). I'd estimate this classic non-Teflon popcorn popper is from the 1950s.

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Shipping options in order of speed from fastest to slowest:

Priority Express
Priority Mail
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Parcel Select / Media Mail / FedEx Ground

Sometimes I substitute shipping methods for something of equal speed or faster.

Tracking is included, except for flats (items mailed in an envelope, such as instruction manuals and recipe booklets).

I reclaim packing materials in order to keep shipping costs low and save natural resources. Printed receipts included upon request.
Refund is for purchase price less s/h, unless my error necessitates the return. I accept returns for any reason, even if you've simply changed your mind (the only exception is props buyers, though, as it's easy to abuse the privilege).
Lost items: full refund or replacement (if available) if tracking info says item didn't arrive within a reasonable amount of time, which varies by destination.

Damaged items: full or partial refund (I may request return or proof of damage). I double-box glassware and especially fragile items. I reserve the right to provide a replacement rather than a refund.
Should you require gift wrapping, a gift note, or have another special request, such as a longer return period, please ask.

Electric Popcorn Popper Vintage Aluminum Knapp Monarch Redi Pop Automatic Corn Popper 12-525B


  • Vintage item from the 1950s
  • Materials: aluminum body, glass lid, bakelite handle and legs, electrical cord
  • Ships worldwide from United States
  • Feedback: 1561 reviews
  • Favorited by: 43 people