I have a Nashiki that the SN does not go along with what I am finding in the DATA BASE?

The SN is also not on the BB, but on the left side of the seat tube at the bottom (read bottom to top). This bike may have been for a non US market. Any help would be appreciated.

From the decals appears to be mid to late 70's. JAPAN decal is on the center of the bottom seat tube also.

SN - ARYG328388

Bill Lake