|t seemed that women felt more comfortable with the smaller version of the Parker "51" – the Demi, also aimed at the female population. One reason for this was that The Parker "41" was made out of a more brittle plastic and could often not withstand the hard life inside womens purses, together with keys, compacts, coins and steel hair brushes. So, within a year, in 1958, also the Debutante Parker "41" was discontinued.
The Parker "41" is very similar to the later style Parker "21".
The design of the clip, the clip of the Parker "41" was of the Parker "51" style.
The number denotation on the cap
The imprint on the filler mechanism (The Parker "41" are imprinted as such, the Parker "21's" are not)