Determining
Vintage Bicycle Value is a tricky business, to say the least. Things like size of the bicycle, time of year and location, all impact the final value dramatically. So too do marketing skills.
I have sold identical bicycles (
Torpado) for between $175 and $1225 - identical except for color. Your bicycle, in a good market and presented well, will fetch $500+, without too much difficulty.
Nice bicycle, by the way, and I believe you about the ride quality. I have owned a few high end
Peugeots, including a high end Peugeot mountain bicycle, and all have impressed me in the ride quality department, not to mention their good looks.