Help With Dating My Cross Pencil Please, Im A Newbie

[smellrod83]

Ladies and gentlemen I am a newbie when it comes to this, so please anything helps. What I know:

 

I believe it is a century series

It is a mechanical pencil

It had above the clip, "1/20 gold filled" and "made in USA" words

It has a little plastic piece attached to clip that says "18 karat gold filled"

The cross logo is in italic letters on the clip

The owners book had a few references to a SelecTip

 

Any help in regards to date, or any other information would be greatly appreciated.

[sriramoman]

Its a classic century manufactured before 1980s. I possess the same pen, collected by my father in 1978 and passed on to me.

[smellrod83]

Its a classic century manufactured before 1980s. I possess the same pen, collected by my father in 1978 and passed on to me.

Thank you sir!! Like yours mine is passed to me from my father and has his name engraved on it. Thank you sir that helps so much!!