Altec 7a 500 Speakers I dont know what they are worth

[Will23]

These speakers were given to me and have been sitting, unused for 10yrs. So I decided to try and sell them. I opened the backs up and found there are JBL D130 speakers inside. 511b horn mounted on top. Components and all looks about 40yrs old or older. How might I be able to tell if the D130s came with the cabinets..and if not does this degrade the value of the speaker?