Here's my vintage Longines watches, I posted these picture to thread in Longines - section of forum before realizing here is vintage section as well.
Just wanted to show few of my watches, bought first one of these in January, I like very much the era and the brand, so I had to get couple more right away. I personally think Longines is great to collect: prizes seem to stay lower than some other brands, quality of watches is very good and rather easy to find.
Conquest 1966 cal. 291 with date, stainless steel
Flagship 1959 cal. 30L sub second, gold plated
Sport Chief 1966 cal. 280, stainless steel
Dress watch 1966 cal. 280, gold plated