JBL L200 Studio Masters

Hi, I have two (2) JBL L200 Studio Masters that I bought new in 1973? and am trying to determine a value range. Last time I used them, they worked fine. I've replaced the grilles twice and the piece where speaker wires connect on one is missing, but still able to connect wires. I had glass tops cut for them a while back. I also have a Marantz 2325 Amp and Dual 701 Turntable for which I'm trying to determine value. All responses are appreciated, Danny Overstreet danny.overstreet@gmail.com