From the Classics Corner, the long running SOSSI Journal series, the author has made available additional material and some color versions of the images pictured in the Journal column.
The Classics Corner #83 - November/December 2009

CC83 Figure 1 (Prague I with crown black 10h + Ivo A)

CC83 Figure 2 (Prague I without crown upright black 10h + 20h)

CC83 Figure 3 (Prague I without crown inverted black 10h + 20h)

CC83 Figure 4 (Prague I without crown sideways left black 10h)

CC83 Figure 5 (Prague I without crown upright red 10h + 20h)

CC83 Figure 6 (Prague I without crown inverted red 10h)

CC83 Figure 7 (Prague I without crown sideways left red 10h + 20h)

CC83 Figure 8

CC83 Figure 9

CC83 Figure 10

CC83 Figure 11

CC83 Figure 12a

CC83 Figure 12b

CC83 Figure 13

CC83 Figure 14

CC83 Figure 15

CC83 Figure 16

CC83 Figure 17

CC83 Figure 18

CC83 Figure 19

CC83 Figure 20

CC83 Figure 21

CC83 Figure 22

CC83 Figure 23

CC83 Figure 24

CC83 Figure 25a

CC83 Figure 25b

CC83 Figure 25c

CC83 Figure 26

CC83 Figure 27

CC83 Figure 28

CC83 Figure 29a

CC83 Figure 29b

CC83 Figure 30

CC83 Figure 31a

CC83 Figure 31b

CC83 Figure 32a

CC83 Figure 32b

CC83 Figure 33