No. The Writers Edition Alexandre Dumas included no rollerball; no such pen was ever made in that form. On top of that, the edition as actually produced differs markedly in shape, decoration and colouring from the pieces offered with a Dumas signature on auction sites. Anyone examining a listing should compare it with reliable pictures of the edition; discrepancies in the overall impression weigh more heavily than individual details.
The pattern is typical of fakes: body shapes, signatures and writing systems are combined at will, so that variants arise which never existed in the Montblanc range. A first step, and often a sufficient one, is therefore to check whether the combination of edition and writing system on offer was ever available at all. Limited editions in particular are well documented in the collectors' literature.