I have a set of four sequential speakers, The serial numbers are sequential 5453, 5454, 5455, 5456. All working , two have a broken post but are full functional. I DID NOT TAKE A PART AND CLEAN. They are in good shape , few mount holes. They are black with rounded edges and metal grill cover over the 12" . I will post pictures tonight. I am looking to sell the set. Putting the feelers out there to see if someone in really interested in them. Would like to get a fair price for them, did research here, on eBay , craigslist and I know they have value. I would rather sell them to someone directly. Would consider partial trade. I will post pics and we can talk.