Although not marketed as a 'Conway Stewart Lady' this little pen has often been compared to the small Parker. The odd thing is that, when capped the Conway is about 1 cm. shorter than the Parker but it is ever so slightly longer when posted for writing. The Parker Lady is quite a bit 'fatter' than the Dinkie. I have read that the Conway Stewart 560 was only produced from 1962 to 1963 to replace the 550 but,in the brilliant 'Fountain pens of the World' Andreas Lambrou dates the pen from 1955, I'll go with Andreas.