Type 6: "The vertical line in the upper left is unbroken between the bottom line of the spandrel and the frame junction line; the vertical line of the left numeral box is broken 0.5 mm from the top"
Type 8: "The vertical line in the upper left reaches the frame junction line and the vertical line of the numeral boxes is unbroken"
Type 9: "The vertical line in the upper left is very faint between the bottom line of the spandrel and the frame junction line; the vertical line of the right numeral box is weak or broken near the top"
Type 10: "The vertical line in the upper left is very faint between the bottom line of the spandrel and the frame junction line; the vertical line of the left numeral box is weak or broken near the top"
Type 11: "The vertical line in the upper left is broken and stops at the bottom line of the spandrel; the vertical line of both numeral boxes is unbroken; and the vertical line in the lower left is weak and broken"
Type 12: "The vertical line in the upper left stops at the bottom line of the spandrel, the vertical line of the left numeral box is weak 0.6 mm from the top and that of the right box is unbroken; there a dent in the left side of the frame opposite the crown"
Type 13: "The vertical line in the upper left stops at the bottom line of the spandrel but is faint; the vertical line in the left numeral box is fine and irregular"
