Tsuchiya Koitsu

Under Construction

Dating Tsuchiya Koitsu prints and other artworks


One of the most difficult aspects of collecting the prints of Tsuchiya Koitsu is in determining the approximate printing date of a particular print. This is important because it determines to a large degree the monetary worth of the print. The task of dating is made difficult, not only because many collectors cannot read the kanji text contained in the publisher seals (which allude to the print's printing date) but also because there still remains some confusion regarding the period of use of said publisher seals. In the interests of furthering scholarship in this artist we reproduce below much of the most important research information that my colleague Tosh Doi and I have gathered over the preceding decade. A far more in-depth discussion of this research can be found in our Koitsu Raisonne, including evidence to support the dating we give below.

There is one set of publisher seals whose dating has been the topic of very vigorous debate over the past decade, and they are the Doi Hangaten "offset" seals containing the Harada carver seal. While some believe that these seals were first used pre-war, we can now state with strong evidence that the Doi Hangaten "offset" seals were never used pre-war; they were first used from around the 1950s shortly after Doi Eiichi restarted the Doi business in 1948. What evidence do we have? Statements from no less than three independent sources, including the daughter of Harada and the daughter of Harada's pre-war master, that Harada did not work for Doi until after the war. Please feel assured that your Koitsu (or Hasui) prints containing Doi Hangaten offset seals were published between about 1950 and 1963. Hopefully that will settle the debate. For further details please see our Koitsu Raisonne.

The Publisher Doi
Publisher Seals Dating Publisher Comment
K0
 K1
 K2
 K3
 K4
 K5
 K6
 K7
 K8
 K9
 K10
 K11
 K12
 K13
 Pre-war
1930s to early 1940s		 Doi Sadaichi publisher seals
K21
 K22
 K23
 K24
 K25
 K26
 Post-war
1948 to about 1950		 Doi Hangaten in-line publisher seals
K31
 K32
 K33
 K34
 K35
 K36
 Post-war
1950 to 1963
(K35 = 1990s)
(K36 = 1950s to present)		 Doi Hangaten offset publisher seals
K51
 K52
 K53
 K54
 Post-war
1963 to about 1981		 Hamamatsu-Do
K61
 K62
 K63
 K64
 K65
 Post-war
1981 to present		 Doi Eiichi publisher seals
K41
 K71
 K41 = early Post-war
K71 = late 1930s		 K41 = Tokyo-Do
K71 = Iida Kunitaro		 Tokyo-Do and Iida Kunitaro were not publishers but distributors of Doi-published prints.
The Publisher Watanabe
The Publisher Watanabe
Publisher Seals Dating Publisher Comment
B to F = Pre-war
I = 1946 to 1957
J = from 1957
K = from 1989		 Watanabe Hangaten Other Watanabe seals have not been found on Koitsu prints.
The Publisher Baba
The Publisher Baba Nobuhiko
Publisher Seals Dating Publisher Comment
K100 K101 K102 K103 K104 K105 K106 K107 K108 *1 *2 Pre-war
1930s to early 1940s
*1, *2 = postwar strike		 Baba Nobuhiko (K100 to K105), Tokyo Hanga-In (K106, K107), Oedo Hanga Kenkyusho (K108) publisher seals *1, *2 = Kyoto Hanga-In's Onotomi printer seal

Back to Research & Articles Back to Koitsu.com Home Back to Ohmi Gallery Home