Here is a nice vac-fill Parker 51 for you. This pen dates to 1944, but it has received a different cap somewhere along the way. The blue diamond cap went away around 1947, so this cap had to come from a later Parker 51. Even though this is not 100% original, it still is a wonderful writer. Where else can you find a pen of this caliber at this price? Get it for $70!
Shoot me an email at: RonsVintagePens@gmail.com