$200 · Acoustic Research AR 4x Speakers in Oiled Walnut Finish

I have a pair of AR 4x speakers in Oiled Walnut finish for sale. The speakers are in good shape considering their age. All drivers are funictional, and both speakers measure 6 Ohms with multimeter measurements. They are very closely matched with the Serial Numbers, FX49516 and FX49509. I know over the time It's become challenging to find a pair with the AR proof and instruction attached on the back side. Just in case someone wants pictures of them without the grills, I am not willing to take risks of damaging the originality of the speakers. I don't think they were ever been opened before. Thanks!