sport coat

Good day Fedora Lounge, this is my first ever post here, I like the 1940s and 1950s fashion and after navigating through this forum I came to the conclusion that I don't know were to get similar clothes to this style. I don´t know if this kind of post should be written on other thread but I...

I'm looking for a genuine 1930s or 1940s sport coat (belted, pleated back preferred) in a men's size 46 for under 50 dollars. Or alternatively a 1960s-1970s sport coat that is a good copy of a 30s-40s one. If I'm nuts for seeking one this old, in this size for this price, tell me.