another pot collection

[JeffS73]

No , no , no and no. lol. There is no titanium, no cobalt. Why do you think there is titanium? That would opacify the glaze. I haven't played around with it

There is a long time feud between the Tokoname-based potters and the Kyoto-based. The Japanese potters are like the b-nut forum, lots of drama.

Haha, OK! Well, titanium can seed crystallisation, it doesn't take much, and the crystals take a different form. But this could also be kiln / firing / holding temp. Really I just know that koyos glaze changed quite a bit over time.

I figured the blue that comes out was from another coloring agent, is it really just copper, perhaps with more flux?

 

[NaoTK]

the floating blue patches are areas of higher Silica content. This causes the colloidal blue effect.

 

[Canada Bonsai]

Have you noticed how Koyos crystalline green glazes changed over time?

Through a series of interviews with Aiba Kouichirou, and subsequently with this son and wife, I built a relative chronology of Koyo's stamps and pot shapes. I then tried to overlay his oribe glazes on top of these known dates to create a timeline that could illustrate the 'evolution of Koyo's Oribe'.... but it has been very difficult to do so. I have a folder with--what appears to me to be--over 25 variations of oribe by Koyo.

The stamp and shape chronology was supposed to be published in a magazine before it seized production.

I own 3 very early examples of 'oribe' from the Koyo kiln.
- The first (the hexagon) lacks the crystals but was described as 'old oribe' to me and was actually made by Koyo's father, Aiba Bunkichi.
- The round bowl is from a pre-1970's era before he had received his stamps but after he had founded the kiln and name, when Koyo was producing round pots almost exclusively.
- The final was produced in a heavy oil kiln before he was forced to shut it down and replace it with a gas kiln in 1978.

I also listed some fun rectangles while I was digging in that folder -- all 3 are impossible to date, according to Koyo himself; 1983 to 2000 is a possible date-range for each, give or take

 

[Colorado]

Some crazy awesome knowledge in this thread!

And really sweet pots @WEI !

 

[WEI]

moving away from glazed for the rest of the pots, here is a set of two rectangles with the signature gourd stamp of Koshosen, the best and least prolific of the Yamaaki kiln’s three generations of potters.



I’m a big fan of the worm-eaten/“mushikui” style; in my opinion, it evokes a ‘wild’ characteristic uncommon in unglazed pots. Mushikui pots have become difficult to source in recent years. Shohin mushikui pots by Koshosen are much rarer than his larger rectangles and ovals.

the larger one has developed some nice patina with deep fissures wrapping around the edges and onto the feet:





it is one of several options for my RMJ:



the smaller one is in a classic rectangle with sloped walls, a thin lower band “eaten through” by fissures, and cut feet - great workmanship





this came from the shohin pot collection of Junichiro Tanaka at Aichi-en. There were many other antique pots on shelves that I unfortunately did not have the time to browse, as I had to catch the Shinkansen back to Tokyo.

more pots incoming!

 

[JeffS73]

moving away from glazed for the rest of the pots, here is a set of two rectangles with the signature gourd stamp of Koshosen, the best and least prolific of the Yamaaki kiln’s three generations of potters.

View attachment 576092

I’m a big fan of the worm-eaten/“mushikui” style; in my opinion, it evokes a ‘wild’ characteristic uncommon in unglazed pots. Mushikui pots have become difficult to source in recent years. Shohin mushikui pots by Koshosen are much rarer than his larger rectangles and ovals.

the larger one has developed some nice patina with deep fissures wrapping around the edges and onto the feet:

View attachment 576093

View attachment 576094

it is one of several options for my RMJ:

View attachment 576095

the smaller one is in a classic rectangle with sloped walls, a thin lower band “eaten through” by fissures, and cut feet - great workmanship

View attachment 576096

View attachment 576097

this came from the shohin pot collection of Junichiro Tanaka at Aichi-en. There were many other antique pots on shelves that I unfortunately did not have the time to browse, as I had to catch the Shinkansen back to Tokyo.

more pots incoming!

There was a great display at taikan-ten thus year featuring these pots. I did a short favebook post on it if you're interested: Yamaaki Mushikui at Taikan Ten