My current project is an early 80's Nishiki International in the dark blue
with outlined lugs. I measured the seat tube C-T at 58cm
& 58cm for the top tube as well.
I have been perusing thread trying to narrow down exactly what year.
It appears to look like this one that the owner labels as a 1983.
https://www.pedalroom.com/bike/1983-...nal-build-5184
My parts match up with his.
I added 10 pics as perhaps that will aid and document for someone down the road.
The serial number on the bottom of the bottom bracket is GE 03135.
If I am interpreting the SN decode info
correctly the G is for Giant built.
If the E is for year that would signify 1985.
The online 1983 catalog page does not sync up
to this one.
Of course I understand there were many made for different markets
and could be spec'd differently so that could explain the variance.
The Suntour Symmetric shifters could be a significant telling detail.
and both derailers are Suntour Cyclone MII.
Crankset is Sugino GS with 42x52 drilled rings and 170mm crank arms.
The Dia Compe G N500 calipers have 0385M stamped on them
and the Sakae Custom Road Champion bar has C-85 stamped it.
The Sakae Custom stem has 80 & 5355 stamped on it.
It came with 27" Araya rims, Sansun hubs, Suntour Perfect 6 cog freewheel 14x28.
By the way it did not come with seatpost and saddle.
I used some from my parts bin.
Datapoint , seatpost is a 26.6.
Thanks for input on narrowing down year.
Another note, a 40mm wide 700c tire fits this machine front and rear.
I look forward to the rebuild and getting it out on the road.