a fancy dinner party? Christensen swirls and flames are also reproduced, often by the same artists making the Guineas. Such vessels and other ceramics were slipped with lead glaze prior to around 1820 and beginning around the middle of the previous century, and therefore the marbles likely also date to this period. This is usually done to rare marbles that have too much damage (flakes, chips, wear, etc.) to be enjoyed on display. I have seen four types, represented by Bumblebees, Girlscouts, Boyscouts, and Watermelons. Spiral Chinas Spiral Chinas possess a spiraling line on one or both poles. Flint marbles are also much harder than limestone marbles; flint cannot be scratched with steel, whereas limestone can.
Marys catseyes have four colors. This marble is recognizable because it contains a transparent clear glass with opaque white filaments in addition to a combination of two other colors (Popeyes with three or more colors are called Hybrid Popeyes ). The flowers approach sloppy in their application, and usually consist of a pair of leaves or leaf and stem with an individual red splotch. This trait is seem on most American machine made marbles, which switched to cheaper, and therefore less vibrant, glass during the 1930s. Other Akro patches were purposefully made by the company; these were marketed with names assigned by Akro Agate. Wilson, and Mary Jane Krupp purchased stock in the company and became co-owners.