The "vintage " pin sights of yesteryear for hunting seem far superior to what is available new, today. This includes the ingenious sights made to be screwed onto the backs of the bows, and the sights made by Bear to fit into the riser face of the 1960s Bears. People evidently pay high prices today for used vintage hunting sights. How strange it seems that instead of progress, we have gone backwards in 50-55 years. Is no one interested in making and selling such sights today? What happened?