Thanks tw,

This gun has chopper lump barrels, seems to be very high build quality. Nice 50-60 percent scroll engraving on CC. There has been a pad added to make the LOP 14 1/4" Just a shade over 6#. It is choked I/C-F, not the usual combination. Used, not abused condition. Somebody liked the gun enough to use it and take care of it too.

Yep, you have to love those Japanese product names!

SO, the consensus so far is 50's-60's manufacture. Good stuff, thanks!