There is a company at Germany or Austria , Westlicht or so. They are the biggest Leica auction people on Earth , they sell for crazy prices. Deal with them and they will offer you to put the selling price in to a max min range. No suprises but lots of Money. They sell even 4 million dollar Leicas.
Thanks - I'll try to find them, but I'd rather deal with someone in the US or Canada. I'm just trying to find out how rare this lens might be and what a fair price for one in EXC+ condition would be.