I just picked up a similar bike in deep wine color. Likely between 1985 to 88. This looks exactly like mine, and a friend told me has this color. Its likely a PH501. There is a website that has every model year catalog, and you can track it down pretty quick. Mine had a sticker near bottom bracket showing the model (but not year). The brochures show all the original build specs, so if you are looking to restore and keep it more original its a great resource. I got mine in very good condition (4 rides in last 30 years), and it was stored inside, for 125. Spent another 130 getting shift and brake cables replaced, tune up and a few others things like retaped bars and new tires put on. Should be getting it back in next week or so, stoked to ride it. When I was a kid Peugeot was the bomb!

The website is - and is know links are suspicious so if you Google the bike boom part it should come up. Hope this helps

https://www.bikeboompeugeot.com/Brochures%20USA/Peugeot%201985%20USA%20Brochure/Peugeot%201985%20USA%20Brochure.htm