What is a Boyd cap?
“BOYD’S GENUINE PORCELAIN LINED CAP” This marking is one of many slight variations in phrasing found embossed on circular milk glass liners (“caps”, “inserts” or “discs”) , part of zinc screw-type lids used with the “Mason” style canning/ fruit jars.
How do you date a Mason jar lid?
There are many ways to date old Ball mason jars, and one of the easiest is to look at the logo. Along with the logo, you can sometimes use the color, size, and other distinguishing marks to help date a mason jar.
When were zinc mason jar lids made?
Mason’s Zinc Lid Jar Patent Nov. 30th 1858” as well as a logo in the shape of a jar on its body. Like its predecessor, it also features a screw top lid and is noticeably narrower at the top than a typical Mason jar.
Why are canning lids hard to find?
It’s a shortage that is being chalked up, in part, to the COVID-19 pandemic. Marie Bregg of Mason Jar Merchant told Better Homes & Gardens that sales through her online shop in late August were up about 600% over any other month in 2020, and 90% of that has been canning lids.
Which mason jars are collectible?
The most valuable mason jars are:
- Van Vliet Improved Jar – $23,500.
- Black Amber Magic Star Fruit Jar – $3,000.
- 1933 Ball Upside Down Error Jar – $1,000. There are two types of Ball upside-down Mason jars.
- The 1870 Chief Mason Jar – $800. (Photo: gregspurgeon.com)
- 1858 Willoughby Stopple Jar – $500. (Photo: hoosierjar.com)
What do the numbers on the bottom of blue mason jars mean?
Not every jar has their manufacture date on the glass, but most have the patent date. There will be a large number on the bottom of your jar. This is the mold number, and unfortunately also has no relation to the manufacture date. These charts tell you the approximate decade in which your Ball jar was made.