Hi Nandric,
Firstly, apologies for my apparent tardiness in responding: personal life and such has had its way.
Anyhow, the best way to follow or use the Japanese market might be to use Google Translation to translate the actual auction sites, their products and bidding and then join up to Rinkya, Japan. They conduct the bidding, which is especially useful for auctions where the seller stipulates Japanes only bidders! They will then arrange for delivery and shipping to you. This it the way that Sinyo123 advised me and it has worked in my case also.
About the range, many thanks for the additional information. I wonder if the 61o and 31o are therefore later models or part of a similar line. Also, what are the differences between ranges (if such they be) and what are their optimised strengths? I know that the 61 is said to use a Shibata - according to the review piece in the noted Grammaphone. I would guess that the 31 L would be the line contact version in keeping with their labelling. Given their range and options, I wonder do they all use Samarium Cobalt magnets and, if so, how many, what types (MGOe) and in which arangements? I am humbled by the amount still for me to learn.
I think that the chart you show has formed a large part in my uncertainties. It misses so many apparently linked cartridges (the G series, 61o, 31o) that I become more curious about the links between these and, of course, the differences. The cartridge database gives the G series but has clear gaps and limitations to its information. Bit by bit, maybe we can piece together the cartridges that represent the Glanz range and their merits.
I do hope so.
As always...