Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://cdn.shopify.com/s/files/1/0628/7273/products/IMG_5336_Style1038_LR_LR_rsd-squashed_wmk_1600x.jpg?v=1579559192)
Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://i.pinimg.com/originals/8b/34/db/8b34db5d1e7354882fd842e92e07f895.jpg)
Kerr 'Self Sealing' Wide Mouth Quart Wide mouth jars, How to can tomatoes, Vintage mason jars
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://i.etsystatic.com/12671724/r/il/3d9a83/5070613043/il_fullxfull.5070613043_5oir.jpg)
Kerr Self Sealing Mason Jar
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://masonjarmerchant.com/cdn/shop/products/IMG_7327_sku101601_LR_rsd_wmk-squashed_1200x.jpg?v=1664644345)
Kerr 'Self Sealing' - Reg. U.S. Pat. Off.' Square Wide Mouth Quart - Mason Jar Merchant
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://i.etsystatic.com/30980136/r/il/c8791c/4889654902/il_fullxfull.4889654902_n8fl.jpg)
Kerr Self Sealing
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://i.etsystatic.com/5927066/r/il/c71872/5590521121/il_fullxfull.5590521121_1q0n.jpg)
Kerr Self Sealing
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://i.pinimg.com/originals/c6/62/a1/c662a1d51bec92192651808c6c35335a.jpg)
Kerr Vintage Regular Mouth Fruity Bulb - Tall Version
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://masonjarmerchant.com/cdn/shop/products/Screen_Shot_2018-08-25_at_5.52.55_PM_3b8dfce4-b832-472e-a6fe-c6ea2fc5671f_2048x.png?v=1666386022)
Kerr 'Self Sealing' Square Regular Mouth Pint - Mason Jar Merchant
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://www.picclickimg.com/ankAAOSwVT1lfLfy/Kerr-Self-Sealing-Wide-Mouth-Mason.webp)
LOT OF 12 Kerr Self Sealing Wide Mouth Mason Jars with Lids $49.99 - PicClick
Produced between 1955-1965 these square squatty jars are a unique treasure. The exact production dates for vintage Kerr jars can be found on the rim
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://masonjarmerchant.com/cdn/shop/products/IMG_5323_Style1036_LR_rsd-squashed_wmk_4041c7ff-2cd6-49bf-b824-b154d3807b48_1200x.jpg?v=1587498004)
Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://i.etsystatic.com/26243026/r/il/24fff7/5336089045/il_fullxfull.5336089045_4h9p.jpg)
Trade Mark Jar
![Kerr 'Self Sealing' - U.S. Pat. Off' Square Wide Mouth Pint - Mason Jar Merchant](https://i.etsystatic.com/12923343/r/il/b4d7b3/1623582366/il_fullxfull.1623582366_7yp0.jpg)
Kerr Self Sealing