Table 2.  Decorative Elements on Porcelain Marbles Decorative Motif Date Range of Production Details Undecorated c. 1800-1920 Usually found in post-1870 contexts. Intersecting sets of parallel lines c. mid 1840s-1910 Checkered pattern of intersecting lines.  Examples with wide central band flanked by narrow bands usually date c. 1850s-60s. Helix c. 1850-1910, more common in latter half of period Single winding line around circumference of marble.  Usually several helixes on one marble, forming intersecting parallel lines. Bands around circumference c. 1850 – 1870 Single set of 2-3 parallel lines dividing marble into equal hemispheres.  Usually also contains leaves, flowers, or some other decorative element. Bull’s Eye 1850s-1860s (types 1 and 2); 1890s (type 3) Sets of concentric rings; see Carskadden and Gartley (1990:62-64) for details on types. Leaves c. 1850-1910 Most often seen in green, although other colors represented as well.  Sometime found in combination with parallel bands. Daisy Wheel c. 1850s-1910, more common in earlier portion of period Two diametrically opposed daisy-like designs, usually separated by parallel bands around circumference of marble. Flowers c. 1850-1910 Carskadden and Gartley (1990:65-66) provide more detailed analysis on dating specific floral types. Spirals c. 1850s-1910 Spiraling line beginning at one or both poles of marble and coiling down about 25% of circumference towards center of marble.   Dates in this table taken from Carskadden and Gartley 1990.