I have a pair of K3's with P3 panadaptors. These 2 K3's were factory built with dual receivers and the works. A copy of the build receipt is attached as a picture that shows all that these K's include. I have the original boxes which I thought were thrown out, but my wife just put them in out garage so all is good. They have sequential serial numbers on the K3's the serial numbers are 8372 and 8373, the P3 serial numbers are 3281 and 3282. They come with custom made covers bearing the Elecraft Logo, and come with the Nifty manuals for both the K3's and P3's, plus all cables to link the K3's and P3's. The P3's also include the video adapter option. These two radios were for our 2 alternate QTH's which became more of a pain than the advantages so we have sold both. Suffice to say they were used very little since one year we would winter at one and the next at the other and always summer at our main home in Ellensburg, WA. I am asking $4,500 plus shipping for each K3 and P3 Set as described above. The K3 8372 will be paired with the P3 3281 and the K3 8373 with the P3 3282. All will come in original boxes. I accept PayPal for payment. I am good on QRZ for contact via email.