i usually just lurk this thread, love seeing so many cool watches, especially the old japanese stuff. i'm curious if there is a good, go to resource for figuring out model and ideally value of vintage watches? specifically, i have a tudor? that i wear sometimes and a rolex datejust from 80s that is essentially nos. i've searched interweb a bit but like a lot of things, too many sites and bs to wade through. figured this would be a good place to start for more informed advice where to start.