From what I could gather at Platinum's website, the range wherein the Sansui is included has urushi maki-e (official designation is PTL-30000B).
Platinum Kanazawa (official designation is PTL-15000H) has gold leaf and also urushi coating. The latter seems to be a different thing when compared to urushi maki-e, but I might be mixing things up as it is quite the late night here already.
It is important to notice that the silk screen printing seems to exist only on the lower PTL-12000M. I found no mention on the brand's website concerning the usage of that method on the15000H.
In addition, while the Sansui is a full 3376 Century, the Kanazawa is a 'Standard' model in the Platinum range which does not benefit from the Slip and Seal tech and is simple snap cap, as opposed to the 3376 Century's (who has the tech and a screw cap). Plus, the Sansui is 14k gold as opposed to a 18k gold in the 15000H.
Please kindly consult the links provided below.
For the 15000H: https://www.platinum...tain_vicoh.html
For the PTL-30000B: https://www.platinum...tain_makie.html
IMHO, it seems at first sight that the Sansui is worthy of the price tag when it comes to aesthetics + 'exclusivity', for lack of a better word.
Edited by Iur, 04 May 2019 - 00:41.