Hey sorry 'bout that, I'm new so didn't quite see the search bar up top (I was looking around the forum window for it instead, DOH!)
So, reading up on some of the threads it look like these are projector lenses, so I'm guessing a rig is 100% necessary with forward lens support. I see that you're also experienced with these lenses Andy? Do you know how much they weighed in as? What about the suggested market price for these? (I believe the ones in the ebay link need to be cleaned professionally, that's why it's so cheap)
Lastly, do ya have any suggestion or recommendation for these type of lenses that are within the "budget" range, 3x cheaper than say, a decent Kowa Prominar on ebay ($500-700)? I'm a bit conflicted with the price point some of these lenses, the cheaper ones seem to be way bulkier/heavier. At least the Rathenower are the smaller anamorphic projector type lenses I've seen so far, anything else are just ridiculously large.