The R0.1 attachment I have Im pretty sure is for the I/II but threads onto the front of the anticomar on my IIIR just fine. Same with V2/V3 extention attachments that I own, and I am pretty sure the same applies for the 4.5 Reflex ring, though I do not have one to test with. I'm pretty sure the same will apply to the glass lenses. Really it makes sense that filters and attachments between the anticomars are interchangeable, as the lens diameters (and thus lens ring threads) must be the same, given they are essentially for the same system, the only operating difference being the position of the shutter. The principal change that was made in introducing the larger filters/attachments as seen in Nokton's pictures, was to make them able to fit to the now standardised Tele-Makinar also, something that could not be done with the original filters.