These commemorative jars are being produced in a lighter, brighter blue color— not quite the same shade as the original jars.(NOTE: As of 2015, other colors have been seen, including a light-to-medium green color)These jars as being sold in sets of 6, and come in pint size only (as of this writing). Also, there are volume/weight measurements embossed along the side of the jar, including cups, milliliters and ounces.
somewhat akin to the practice of collecting coins and comparing their minor “mold” or “die” variations.
Note: for a bit of information about the “off-size” BALL PERFECT MASON jars that are occasionally found, please check the COMMENTS section farther down on this page, and read the queries from Lee and Michelle, posted November / December of 2015. The great majority of these jars were made in bluish-aqua or “Ball Blue” colored glass (Ball Blue is the standard color of these jars, a somewhat “more blue” shade of aqua).
Ball Perfect Mason jars were made utilizing steel molds as part of “ABM” (“Automatic Bottle Machine”) i.e. Many different jar molds (thousands) were used over the many years’ time these jars were being produced.
Each mold was hand-cut (hand-engraved) with the lettering incised backward into the inside surface of the mold, which of course resulted in the embossing (raised lettering) which is seen on the surface of the jar.
A number of “error jars” are found among the Ball Perfect Mason’s, including examples found with the embossing missing a letter (or letters), or with a word misspelled, such as “PERFFCT”, “PEPRECT” or “PEREFCT”.
A listing of many of these error jars can be found in the Redbook, a price guide used by fruit jar collectors.This is one of the aspects of collecting these jars that can be fun and intriguing (or boring to some!) if you are “into” studying fine differences in these jars ….In general, the Ball Perfect Mason variants are listed in the Redbook from #332 to #363-3, and several of the BPM error jars are found within this group, listed as jars #352 to #363.There are no doubt very minor variants/errors that are not currently listed in that guide.Later versions (after circa 1936) were made in clear glass, and some (usually from the 1950s) in brown amber.