True All,
Signature doesn't equate to value, unless it's one of the hundreds of stamps, signs, seals, and chops that's worth anything. My chops database tells you who a maker is, but it doesn't tell you anything about whether that maker is worth a dime. I have chops from kilns up there that are patently worthless right next to the signatures of multi-grand potters. I'd advise you, if you're interested Thams, to next time contact me directly. I rarely have time to visit here. You'll find my email on the website For Sale page. Akira Shozan pots are desirable. Not as desirable as Gyozan or some Keizan, but still high tier Tokoname. Retail prices in Japan these days are about 30% less or so than original Catalog value, unless a nice patina has developed, then 30% more than catalog.
Http://JapaneseBonsaiPots.net/