Penna stilografica vintage PARKER 51 SPECIAL ~ tipo 2 - unità di riempimento aerodinamico anni '50 ~ nuova sacca

All good, clean parts & a new ink sac. Type 1 barrels will only work on a Type 1 aero fill units. Type 1 barrels will not work with a Type 2 filler. The barrel will stop short of the clutch ring. Type 2 barrel threads stop a bit short of the end of the barrel (see photo), and will work on both Type 1 and Type 2 fill units, but excellent Type 2 fillers are more plentiful and cheaper.

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