The 149 is genuine; older Meisterstücks did not yet bear a serial number on the clip, and the deviating spelling of the Ü with dash instead of dots is typical for older models. The combined hints of the buyer (original nib, old engraving form, missing serial) speak for a real 80s model. For further use, another 146 need not necessarily be dried out: with current seals it is not necessary, and with writing instruments with cork seal it suffices to condition them with water some days before filling.