The design is referenced in LIB-1359.2017 Japanese Swords and Tsuba from the Professor A. Z. Freeman and the Phyllis Sharpe Memorial collections, Sotheby's, London, Thursday, 10 April 1997; p. 18, item 37: "pierced with two large formalised butterflies..."
A Kamakura-bori tsuba of octagonal form, Momoyama period
"Traditionally the old iron plate tsuba are classified into Ko Tosho (old sword smith), and Ko Katchushi (old armor maker) styles. It is sometimes difficult to justify attribution of a given tsuba to the Tosho or Katchushi category. Generally guards with raised rims or relatively complex designs tend to be assigned to Katchushi. This is basically a convention we follow out of habit and convenience." [...] "In Token Kai-Shi part six, Articles by Akiyama Kyusaku, Robert Haynes comments: "…from 1300 to 1400 over 150,000 MOUNTED swords were made in Japan for export alone. This means that over four tsuba a day were made for 100 years. This would mean that at least 3000 persons were making nothing but tsuba, let alone all the other fittings needed to complete these swords. With sword smiths, fittings makers and all the other artists need to complete a sword for export, at least 10,000 sword artists were working together, in any one of these hundred years."Another tsuba of similar design, Tōshō school, is illustrated in this collection; see TSU-0319.2015.
Reference to this design can be found in LIB-1359.2017 Japanese Swords and Tsuba from the Professor A. Z. Freeman and the Phyllis Sharpe Memorial collections, Sotheby's, London, Thursday 10 April 1997; p. 18-19, lot № 37: "A Kamakura-bori Tsuba, Momoyama Period. ...pierced with two large formalised butterflies..."
A Kamakura-bori tsuba of octagonal form, Momoyama period.
Very fine iron plate well hammered and turned, tapering and rolling to the rounded edge. Tsuba of a cross-form mokko shape (juji-mokko-gata) decorated with spider web inlaid in gold on both sides. The face is carved with a silver-damascened spider holding a gold-damascened butterfly (nunome-zōgan). Kozuka and kogai hitsu-ana of inome (boar's eye) form. The udenuki ana may be of purely decorative purpose.
Signed: Yatsushiro [八代] Jingo Saku [甚吾作], a signature of Chisokutei Amatsune, one of the last Jingo masters.
Late Edo period, Tenpō era, 1830-1844.Size: Height: 77.5 mm; Width: 72.8 mm; Thickness: 4.1 mm; Weight: 141 g.
In a custom wooden box.
Here is what Markus Sesko wrights in his book The Japanese toso-kinko Schools, 2012, on page 374:An artist who worked in the style of the Shimizu-Jingo school was Chisokutei Amatsune (知足亭天常). He was actually a samurai from Yatsushiro who made tsuba as a sideline. An extant old hakogaki of one of his pieces mentions that he died in Edo in the sixth month of An'ei eight (1779) at the age of 73. But the era of An'ei is probably wrong because Chikokutei (sic) is today dated by most experts around Tenpō (1830-1844). His relationships with the Shimizu school or under which Jingo master he had studied are unknown. From the point of view of production time and the finishing of nakago-ana, he is rather associated with the 5th and last gen. Shigenaga who died in the seventh year of Kaei (1854). A peculiarity of Chisokutei was that he signed his Jingo copies with "Yatsushiro Jingo Saku" ([八代甚吾作) but added the small syllable "chi" (チ) or the character "Chi" (知) for "Chisokutei" to identify them as copies.No longer available.
