It is Marked BC Miroku only. It is an SLE SxS with 9 pin locks. FEII is the model. A model F is an extractor and FE an ejector. There was an article by Gough Thomas in "The Field" I am trying to track down a copy. He spoke very highly of them. A BSS is a much plainer gun than the Miroku version. My gun is colour case hardened has drop points to the stock and gold cocking indicators. I have seen other examples coin finish and concealed hand detachable locks. I will try and post some photo's. The serial number of my gun is 166191.