In 2004 I found the frame of this bike put out for trash
collection. It had several large dents in the frame tubes so I
stripped it for parts and put the frame in the attic.
In the Spring of 2009 I decided to attempt rolling the dents with
Bicycle Research frame blocks.
It worked out well, and I've posted a how to
HERE
Just as I had thought, it is a great riding, all Reynolds 531 bike, and
here are some detail photos:

By '83 Puch was mixing the Puch namd and Austro-Daimler on their bikes
in the U.S.
I used a set of DiaCompe SC (self centering) brakes - usually seen on
Bridgestones.

The SunTour barcons came off of a broken Viscount I picked up a couple
years later.

I think the crank is the only original component that found its way
back on the Inter.
Puch was an early European adopter of Shimano components for their
bikes.
Still have to replace the logos.
A good
history of Puch-Austro Daimler HERE