This is a Mark VI with 2 necks. The original one (with a patch, closing the hole wich was nade for a pick up microphone) and a custom made Gloger neck, solid silver. (https://www.gloger-handkraft.com/). They both sound and intonate good, but the custom made neck has a little more edge and volume. In fact you buy 2 different sounds with this instrument. You can always decide to sell one of the necks, there is a big market for both. I did a complete overhaul 2 years ago, and serviced it just now. A top notch instrument!