Ghost....what are the serial numbers? Theres should be two. the first will be a paper sticker located on/under the bottom bracket or next to it on the chainsaty and the second will be stamped number on/under the BB or on the rear dropout.
I'm thinking '82 PH10. I dont have any info available at work so I'll look into it when I get home.
Here's something to look into as well....date codes. What does yours have?
http://cyclespeugeot.com/SerialNumbers.html
Jim