Don, I believe you have nailed it. Note wood dowel inserted in the steer tube (see sellers photo of underside of fork crown) which was a detail found only on PY 10 models I am told.
Jay Dubiel Halifax, VA USA
Date: Wed, 21 Apr 2010 08:20:10 -0700 (PDT)
1978 PY10EC - color - gaud (gold)
http://www.peugeotshow.com/
The bottom bracket routing matches the picture on the left hand side of the web page above.
- Don Gillies
San Diego, CA, USA