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If anyone knows of a link that I missed, has a scan, or even a pic, I'd appreciate it.

I think this is the same as the Rz, which I believe is the same as the R with the addition of a current limiter. Well, at least it looks the same. https://acuvance.co.jp/pdf/download-english/p2_26.pdf?fbclid=IwY2xjawITQB5leHRuA2FlbQIxMAABHQOXjbl8cLWOILKbN1Vlwlr_zHBHW-AqzZpMiXlchdY-P4aag_1mjtWLsw_aem_xgE4J-cmO_MxrSTEdP12DQ