Here is a beautiful Parker Vacumatic. The azure blue colored vacumatics were only made from 1940-1948. Since there are no barrel imprints remaining I have to used other clues to narrow the manufacture date. This pen was likely made in 1946 or 1947. I base this judgment mostly on how the clip was manufactured. After World War 2, Parker began stamping the clips rather than molding them. A stamped clip will have a negative impression on the underside, while a molded clip does not. Since it is difficult to see this difference without taking the clip off you will have to take my word that it is stamped :).
Get this beauty for only $55
Email me at: RonsVintagePens@gmail.com