Open the case pocket and find the accessories that accompanied this flawlessly perfect SE-500N including the sales ticket. It may as well be Summer 1976. 
 
F763771 is a time-warp condition example - a white-glove job that only comes out for very special occasions. It has a headstock to match full seventies collar, and a skinny neck to match the tight fit tank top. Crystal clear Maxons and a perfectly functioning tremolo invite us to enjoy this guitar, but the condition scares us into gently placing it back in its case. 
 
This is a collector's dream. And yes, it is a Fujigen product - production had skipped across town to there by this time.