I got some of this film in ready loaded 35mm cassettes direct from Ultrafine a couple weeks ago--very nice film I agree, however I have compared it directly with Kentmere 100 (aka Ilford Pan 100 in some countries) and concluded they are the same film. Edge markings/numbers identical except "Ultrafine Extreme 100" instead of "Kentmere 100". Orwo UN54 is only made in motion picture form, and would not have frame numbers 1, 1a, 2, 2a etc. like still film. It would have the Kodak 'keycode' numbers w/ bar code every 10 frames or so (for telecine time code). Looks like Ultrafine is bulk-rolling this themselves, as the rolls I got never start exactly at 0 nor end at 36 or 37. Sometimes they start at, for example, 17 then end at 42, followed by a couple blank frames, then 0 or 1, etc. It's lovely, rich film and is an excellent alternative to FP4+, though slightly more grain.