I think this is a bit more recent. I cannot find it in the catalogues I have at hand right now, but I have seen this also numbered as "P 4101-xxx", which would indicate that this is a model by Sven Palmqvist from (probably) the 60s. This piece, however, was probably produced later, i.e. after the new numbering system used here was put in place. Also from just looking at the design, it strikes me as a lot later than 20s/30s.