A pair of 58/5.6 Konica Hexanons on a Koni-Omegaflex board. The taking lens is in a bizarre and generally useless #0 shutter, the viewing lens is in barrel. Otherwise they're identical.
I have a 60/5.6 Konica Hexanon from a Koni-Omega that I reshuttered in a proper Copal 0. It is a very useful lens on 2x3, will make infinity on a 2x3 Speed Graphic. More-or-less an f/8 (six elements in four groups) Super Angulon clone. The 58/5.6 is a newer presumably better design, roughly an f/5.6 (eight elements in four groups) SA clone. Should be marginally better than the 60, which it replaced on the K-O. We'll see.
Big surprise was that although the 60's rear cell will hit a Copal #0 Press shutter's diaphragm, the 58's rear cell doesn't.
I feel somewhat like a barbarian for turning a perfectly good Koni Omegaflex 58 lens set into parts. The cameras are rare, 58 lens sets are rarer. But it was offered on eBay in, as they say, open outcry and I was the only person who wanted it.