Montblanc 642

[Saki]

I have one of these in green striated celluloid(?) and a gold cap.
Did they have an ink window?
Mine does not but I've seen a similar one in black/gold with an ink window.

[ChrisC]

None of the green striated pens will have an ink window. Originally, the parts of the celluloid that weren't green were clear. Over time, they amber darker and darker.

[Saki]

Thank you, ChrisC.

That clears it up very nicely.