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What Are The Parker 51 Ballpoint/mp Variants?

mitto

By mitto
in It Writes, But It Is Not A Fountain Pen ....

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mitto

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I have been a fan of Parker 51 line pens. In the course of my collecting the P51s, I come across variety in the MPs as well in the BPs. The MPs I find are not all the same as far as tip size and shape is concerned. I know the difference of shape in the tips of vac and aero pencils. But among the aero pencils I find that some have longer tips and others have short tips. Why is the difference? Also I have a few aero pencils with longer tips that I don't understand how do they work.

Same is the case with the ballpoints. Some have metal barrel screws. Others have plastic. Some have tips same as that of a P45 BP tips. But I have a few P51 cap actuated BPs (that have metal barrel screws) with tips that are the same or perhaps identical to that of the P51 MPs with the shorter tips. So they give the look of an aero MP except that they have the cap activated mechanism and take the BP refill.

Further, this later type of BP that I have, often pushs out, on its own, the retaining screw alongwith the jewel on top of the cap. But when I retighten the retaining screw/jewel it starts working again for quite some time until it repeat the auto pushing out of the retaing screw/jewel and clip.

 

What is the scene? :)

Edited by mitto

Khan M. Ilyas

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