If you are wanting the info to purchase a new fly line(s) for the rods, please be aware that things have changed over the years. Those rods very likely have a slow to moderate action. They were designed to be cast with what we now call a "true" line weight. The one you pictured looks like it was set up for a 7-8wt fly line.
As rods have changed over the years and gotten faster in action, line manufacturers have changed lines to better fit those faster (stiffer?) actions. Thus, the best selling fly line in the world, the Rio Gold, is now about a half line size heavier than the true line weight of yesteryear per line weight.
I would probably not put a modern heavy weight forward line (ie Rio Grand) on the rod. I suspect a 7wt Rio Gold will match up with it well. In the lesser expensive lines, the SA Frequency Boost and the Rio Mainstream trout are closer to "true" line weights. Either one of those in a 8wt WFF likely will work well.
