For sale I have a Korby KAT Blue tube microphone. This uses their version of a K67 capsule. Original these were cardioid only but the capsule is dual back plate so I had it modified by Preston Tate White at PTW Audio to be multi-pattern. This is a wonderful sounding microphone and incredibly more flexible than the stock cardioid. Comes with custom case. $1750. New these were $3200
From Vintage King website: The Korby Audio KAT Blue is a luscious, handmade tube condenser microphone tailored to fall within the parameters of the classic German large diaphragm tones (U47, U67). Powerful and forward mid range helps vocals sit well in a mix, but also try it on instruments and elsewhere as its versatility will make it one of your favorites in your mic closet. Includes power supply, cable, mount and case.