Wouldn't the appropriate forum be 'eBay?' It seems it gets a little sticky whenever anyone asks
"accepting offers
"
comlearn wrote:
Accepting offers for this lens in brand new, mint condition. It's a collector's item.
Perhaps you saw a story in Pop Photo about one for sale for $49K (attached). There's one on eBay in very poor condition for about $6,350. It's a remarkable lens and evidently very few were made. It's not for use with DSLRs since it requires the mirror up and can damage the sensor. A couple of articles about the lens are attached.
The lens is in the Boston area. I do not have the original case.