Type 1
So far, this type of signature has only been found on one print of CA-007(Les Deux Cygnes, Bruges).
Type 2
Same as type 1 with a dot after the year.
So far, this type of signature has only been found on some prints of CA-007-E (Two Swans, Bruges).
Type 3
So far, this type of signature has only been found on a few prints of 1908
Type 4
Same as type 3 with a dot before and after the year.
So far, this type of signature has only been found on some prints of 1908
Type 5
Same as type 4 with an apostrophe or ‘’superscript dot’’ (instead of a dot) before the year.
So far, this type of signature has only been found on some prints of 1908, 1909 and 1910. All etchings initially made during these years but printed later bear another type of signature.
Type 6
Same as type 4 with a colon (instead of a dot) before the year.
So far, this type of signature has only been found on some prints of 1908, 1909 and 1910.
All etchings initially made during these years but printed later bear another type of signature.
Type 7
Signature ‘’in pen’’ on a print.
Some prints may bear a type 8 signature with a very faint dot at the end (?).
Type 8
Same as type 7 with a dot at the end.
From a letter dated January 13, 1912.
Type 9
From a 1932 drawing.
Type 10
Same as type 9 with a dot at the end.
From a letter dated October 3, 1922