The Rhombus variety showing the 2d tablet
curves being uneven in shape, giving the
tablet a wonky appearance. This variety
really begins to show on the chalk-surfaced
variety of M12. This is an example in
its early state.

M12(1) SG 227
Pale grey-green and carmine-red
Chalk surfaced paper
Perf. 14
De La Rue
June 1906
Rarity

M12(2) SG 229
Dull blue-green and carmine
Chalk surfaced paper
Perf. 14
De La Rue
May 1907
Rarity

M12(-)
Dull blue-green and bright carmine
Chalk surfaced paper
Perf. 14
De La Rue
April 1908
Rarity

M12(-)
Blue-green and bright carmine
Chalk surfaced paper
Perf. 14
De La Rue
April 1908
Rarity

M12(-)
Blue-green and deep bright carmine
Chalk surfaced paper
Perf. 14
De La Rue
December 1911
Rarity

M12(-)
Deep blue-green and carmine-red
Chalk surfaced paper
Perf. 14
De La Rue
June 1910
Rarity

M12(3) SG 228
Pale grey-green and scarlet
Chalk surfaced paper
Perf. 14
De La Rue
Feb 1909
Rarity

M12(4)
Grey-green and scarlet
Chalk surfaced paper
Perf. 14
De La Rue
June 1910
Rarity

Next (M13)