Vintage JBL speakers

2 - Vintage JBL type C51 Apollo Speakers. -  Serial numbers 53132 & 53133,  Frequency Dividing 7485, network LX5.  Cabinets are in great shape with only a small 3" chip out on the bottom molding on one and has original JBL emblems.  

I also have still in shipping box, one D130F, ser no. 6074 speaker that was sent to JBL for service, still has JBL service tag dated 12/23/1970

I would appreciate any info on what I have here and a approx value. Thank You