Thanks to Noobmaen for identifying this keyboard before it arrived. Basically this is a different branded version of the
"Tulip SMK series" and has white
SMK inverse cross mount switches which are tactile, just as described in the Wiki.
I haven't found much about Japan Computer Corp (JCC) or their computers except for one website in Japanese -
https://www.okqubit.net/machines/jcc.html

- 1.JPG (1.38 MiB) Viewed 3254 times
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Also Chryos' video on these switches but my experience is slightly different in that the keys on my board sound and feel consistent for the most part but they certainly are on the loud side.